21115121664

Names of 21115121664

• Cardinal: 21115121664 can be written as Twenty-one billion, one hundred fifteen million, one hundred twenty-one thousand, six hundred sixty-four.

Scientific notation

• Scientific notation: 2.1115121664 × 10¹⁰

Factors of 21115121664

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 869

Divisors of 21115121664

• Number of divisors d(n): 416
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 21 23 24 26 28 32 39 42 46 48 52 56 64 69 78 84 91 92 96 104 112 128 138 156 161 168 182 184 192 208 224 256 273 276 299 312 322 336 364 368 384 416 448 483 512 546 552 598 624 644 672 728 736 768 821 832 896 897 966 1024 1092 1104 1196 1248 1288 1344 1456 1472 1536 1642 1664 1792 1794 1932 2048 2093 2184 2208 2392 2463 2496 2576 2688 2912 2944 3072 3284 3328 3584 3588 3864 4096 4186 4368 4416 4784 4926 4992 5152 5376 5747 5824 5888 6144 6279 6568 6656 7168 7176 7728 8372 8736 8832 9568 9852 9984 10304 10673 10752 11494 11648 11776 12288 12558 13136 13312 14336 14352 15456 16744 17241 17472 17664 18883 19136 19704 19968 20608 21346 21504 22988 23296 23552 25116 26272 26624 28672 28704 30912 32019 33488 34482 34944 35328 37766 38272 39408 39936 41216 42692 43008 45976 46592 47104 50232 52544 53248 56649 57408 61824 64038 66976 68964 69888 70656 74711 75532 76544 78816 79872 82432 85384 86016 91952 93184 94208 100464 105088 113298 114816 123648 128076 132181 133952 137928 139776 141312 149422 151064 153088 157632 159744 164864 170768 183904 186368 200928 210176 224133 226596 229632 245479 247296 256152 264362 267904 275856 279552 282624 298844 302128 306176 315264 329728 341536 367808 372736 396543 401856 420352 448266 453192 459264 490958 494592 512304 528724 535808 551712 559104 597688 604256 612352 630528 659456 683072 735616 736437 793086 803712 840704 896532 906384 918528 981916 989184 1024608 1057448 1071616 1103424 1118208 1195376 1208512 1224704 1261056 1366144 1471232 1472874 1586172 1607424 1681408 1718353 1793064 1812768 1837056 1963832 1978368 2049216 2114896 2143232 2206848 2390752 2417024 2522112 2732288 2942464 2945748 3172344 3214848 3362816 3436706 3586128 3625536 3674112 3927664 4098432 4229792 4286464 4413696 4781504 4834048 5044224 5155059 5464576 5884928 5891496 6344688 6429696 6873412 7172256 7251072 7855328 8196864 8459584 8572928 8827392 9563008 9668096 10088448 10310118 10929152 11769856 11782992 12689376 12859392 13746824 14344512 14502144 15710656 16393728 16919168 17654784 19126016 19336192 20620236 21858304 23539712 23565984 25378752 25718784 27493648 28689024 29004288 31421312 32787456 33838336 35309568 38252032 38672384 41240472 43716608 47131968 50757504 54987296 57378048 58008576 62842624 65574912 67676672 70619136 76504064 77344768 82480944 94263936 101515008 109974592 114756096 116017152 125685248 131149824 135353344 153008128 164961888 188527872 203030016 219949184 229512192 232034304 251370496 270706688 306016256 329923776 377055744 406060032 439898368 459024384 502740992 541413376 659847552 754111488 812120064 879796736 918048768 1005481984 1319695104 1508222976 1624240128 1759593472 2639390208 3016445952 3519186944 5278780416 7038373888 10557560832 21115121664
• Sum of all divisors σ(n): 72393237504
• Sum of proper divisors (its aliquot sum) s(n): 51278115840
• 21115121664 is an abundant number, because the sum of its proper divisors (51278115840) is greater than itself. Its abundance is 30162994176

Bases of 21115121664

• Binary: 10011101010100011110011000000000000₂
• Hexadecimal: 0x4EA8F3000
• Base-36: 9P7EC5C

Squares and roots of 21115121664

• 21115121664 squared (21115121664²) is 445848362885522128896
• 21115121664 cubed (21115121664³) is 9414142426023021855803330002944
• The square root of 21115121664 is 145310.4320549631
• The cube root of 21115121664 is 2763.9564513333

Scales and comparisons

• 21,115,121,664 seconds is equal to 671 years, 20 weeks, 3 days, 23 hours, 34 minutes, 24 seconds.
• To count from 1 to 21,115,121,664 would take you about one thousand, three hundred forty-two years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21115121664 cubic inches would be around 230.3 feet tall.

Recreational maths with 21115121664

• 21115121664 backwards is 46612151112
• The number of decimal digits it has is: 11
• The sum of 21115121664's digits is 30
• More coming soon!