Building on what LocutusofBorg said: <extremely evil grin>

Currently, the internet uses

IPv4 technology, which allows for 2^32 nodes to be connected to the internet (assuming no network address translation is being done), which amounts to

4, 294, 967, 296 possible nodes. In spoken word terms, that is four

billion, two hundred and ninety-four

million, nine hundred and sixty-seven

thousand, two hundred and ninety-six possible nodes.

The new technology,

IPv6, allows for significantly more nodes to be connected simultaneously. Specifically, 2^128 nodes will be possible, which amounts to

340, 282, 366, 920, 938, 463, 463, 374, 607, 431, 768, 211, 456 possible nodes. In spoken words, that is a whopping three hundred and fourty

undecillion, two hundred and eighty-two

decillion, three hundred and sixty-six

nonillion, nine hundred and twenty

octillion, nine hundred and thirty-eight

septillion, four hundred and sixty-three

sextillion, four hundred and sixty-three

quintillion, three hundred and seventy-four

quadrillion, six hundred and seven

trillion, four hundred and thirty-one

billion, seven hundred and sixty-eight

million, two hundred and eleven

thousand, four hundred and fifty-six nodes.

And it gets better.

MD5 hashing technology also has 2^128 possible hashes. however, the newer standard, SHA1, has more still - 2^140 to be exact, which amounts to (are you sitting down?)

1, 393, 796, 574, 908, 163, 946, 345, 982, 392, 040, 522, 594, 123, 776 possible hashes or, in spoken words, one

tredecillion, three hundred and ninety-three

duodecillion, seven hundred and ninety-six

undecillion, five hundred and seventy-four

decillion, nine hundred and eight

nonillion, one hundred and sixty-three

octillion, nine hundred and fourty-six

septillion, three hundred and fourty-five

sextillion, nine hundred and eighty-two

quintillion, three hundred and ninety-two

quadrillion, fourty

trillion, five hundred and twenty-two

billion, five hundred and ninety-four

million, one hundred and twenty-three

thousand, seven hundred and seventy-six.

And it gets better still.

Public-key cryptography uses larger numbers still - 2^1024 or more is common. That amounts to (OK, this is getting rediculous)

179, 769, 313, 486, 231, 590, 772, 930, 519, 078, 902, 473, 361, 797, 697, 894, 230, 657, 273, 430, 081, 157, 732, 675, 805, 500, 963, 132, 708, 477, 322, 407, 536, 021, 120, 113, 879, 871, 393, 357, 658, 789, 768, 814, 416, 622, 492, 847, 430, 639, 474, 124, 377, 767, 893, 424, 865, 485, 276, 302, 219, 601, 246, 094, 119, 453, 082, 952, 085, 005, 768, 838, 150, 682, 342, 462, 881, 473, 913, 110, 540, 827, 237, 163, 350, 510, 684, 586, 298, 239, 947, 245, 938, 479, 716, 304, 835, 356, 329, 624, 224, 137, 216 possible encryption keys, or in spoken words (

EXTREMELY deep breath), one hundred and seventy-nine

uncentillion, seven hundred and sixty-nine

centillion, three hundred and thirteen

novemnonagintillion, four hundred and eighty-six

octononagintillion, two hundred and thirty-one

septennonagintillion, five hundred and ninety

sexnonagintillion, seven hundred and seventy-two

quinnonagintillion, nine hundred and thirty

quattuornonagintillion, five hundred and nineteen

trenonagintillion, seventy-eight

duononagintillion, nine hundred and two

unnonagintillion, four hundred and seventy-three

nonagintillion, three hundred and sixty-one

novemoctogintillion, seven hundred and ninety-seven

octooctogintillion, six hundred and ninety-seven

septoctogintillion, eight hundred and ninety-four

sexoctogintillion, two hundred and thirty

quinoctogintillion, six hundred and fifty-seven

quattuoroctogintillion, two hundred and seventy-three

treoctogintillion, four hundred and thirty

duooctogintillion, eighty-one

unoctogintillion, one hundred and fifty-seven

octogintillion, seven hundred and thirty-two

novemseptuagintillion, six hundred and seventy-five

octoseptuagintillion, eight hundred and five

septenseptuagintillion, five hundred

sexseptuagintillion, nine hundred and sixty-three

quinseptuagintillion, one hundred and thirty-two

quattuorseptuagintillion, seven hundred and eight

treseptuagintillion, four hundred and seventy-seven

duoseptuagintillion, three hundred and twenty-two

unseptuagintillion, four hundred and seven

septuagintillion, five hundred and thirty-six

novemsexagintillion, twenty-one

octosexagintillion, one hundred and twenty

septensexagintillion, one hundred and thirteen

sexsexagintillion, eight hundred and seventy-nine

quinsexagintillion, eight hundred and seventy-one

quattuorsexagintillion, three hundred and ninety-three

tresexagintillion, three hundred and fifty-seven

duosexagintillion, six hundred and fifty-eight

unsexagintillion, seven hundred and eighty-nine

sexagintillion, seven hundred and sixty-eight

novemquinquagintillion, eight hundred and fourteen

octoquinquagintillion, four hundred and sixteen

septenquinquagintillion, six hundred and twenty-two

sexquinquagintillion, four hundred and ninety-two

quinquinquagintillion, eight hundred and forty-seven

quattuorquinquagintillion, four hundred and thirty

trequinquagintillion, six hundred and thirty-nine

duoquinquagintillion, four hundred and seventy-four

unquinquagintillion, one hundred and twenth-four

quinquagintillion, three hundred and seventy-seven

novemquadragintillion, seven hundred and sixty-seven

octoquadragintillion, eight hundred and ninety-three

septenquadragintillion, four hundred and twenty-four

sexquadragintillion, eight hundred and sixty-five

quinquadragintillion, four hundred and eighty-five

quattuorquadragintillion, two hundred and seventy-six

trequadragintillion, three hundred and two

duoquadragintillion, two hundred and nineteen

unquadragintillion, six hundred and one

quadragintillion, two hundred and forty-six

novemtrigintillion, ninety-four

octotrigintillion, one hundred and nineteen

septentrigintillion, four hundred and fifty-three

sextrigintillion, eighty-two

quintrigintillion, nine hundred and fifty-two

quattuortrigintillion, eight-five

tretrigintillion, five

duotrigintillion, seven hundred and sixty-eight

untrigintillion, eight hundred and thirty-eight

trigintillion, one hundred and fifty

novemvigintillion, six hundred and eighty-two

octovigintillion, three hundred and forty-two

septenvigintillion, four hundred and sixty-two

sexvigintillion, eight hundred and eighty-one

quinvigintillion, four hundred and seventy-three

quattuorvigintillion, nine hundred and thirteen

trevigintillion, one hundred and ten

duovigintillion, five hundred and forty

unvigintillion, eight hundred and twenty-seven

vigintillion, two hundred and thirty-seven

novemdecillion, one hundred and sixty-three

octodecillion, three hundred and fifty

septendecillion, five hundred and ten

sexdecillion, six hundred and eighty-four

quindecillion, five hundred and eighty-six

quattuordecillion, two hundred and ninety-eight

tredecillion, two hundred and thirty-nine

duodecillion, nine hundred and forty-seven

undecillion, two hundred and forty-five

decillion, nine hundred and thirty-eight

nonillion, four hundred and seventy-nine

octillion, seven hundred and sixteen

septillion, three hundred and four

sextillion, eight hundred and thirty-five

quintillion, three hundred and fifty-six

quadrillion, three hundred and twenty-nine

trillion, six hundred and twenty-four

billion, two hundred and twenty-four

million, one hundred and thirty-seven

thousand, two hundred and sixteen.

Source (his data, my corrections and additions)

One GOOGOL is a ONE followed by 100 zeroes. (10^100, or 10, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000)

One GOOGOLPLEX is a ONE followed by one googol zeroes. (10^10, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000, 000) (you can't write a googolplex, even in a million years)

Source