21155137139968

Names of 21155137139968

• Cardinal: 21155137139968 can be written as Twenty-one trillion, one hundred fifty-five billion, one hundred thirty-seven million, one hundred thirty-nine thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1155137139968 × 10¹³

Factors of 21155137139968

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 468

Divisors of 21155137139968

• Number of divisors d(n): 324
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 89 104 128 167 169 178 197 208 256 334 338 356 394 416 668 676 712 788 832 1157 1336 1352 1424 1576 1664 2171 2314 2561 2672 2704 2848 3152 3328 4342 4628 5122 5344 5408 5696 6304 8684 9256 10244 10688 10816 11392 12608 14863 15041 17368 17533 18512 20488 21376 21632 22784 25216 27889 28223 29726 30082 32899 33293 34736 35066 37024 40976 42752 43264 50432 55778 56446 59452 60164 65798 66586 69472 70132 74048 81952 111556 112892 118904 120328 131596 133172 138944 140264 148096 163904 193219 223112 225784 227929 237808 240656 263192 266344 277888 280528 296192 327808 362557 386438 427687 446224 451568 455858 475616 481312 526384 532688 555776 561056 655616 725114 772876 855374 892448 903136 911716 951232 962624 1052768 1065376 1122112 1450228 1545752 1710748 1784896 1806272 1823432 1902464 1925248 2105536 2130752 2244224 2482121 2511847 2900456 2928011 2963077 3091504 3421496 3569792 3612544 3646864 3804928 3850496 4211072 4261504 4488448 4713241 4964242 5023694 5494133 5559931 5800912 5856022 5926154 6183008 6842992 7139584 7225088 7293728 8422144 8523008 9426482 9928484 10047388 10988266 11119862 11601824 11712044 11852308 12366016 13685984 14587456 18852964 19856968 20094776 21976532 22239724 23203648 23424088 23704616 24732032 27371968 29174912 32267573 37705928 38064143 39713936 40189552 43953064 44479448 46407296 46848176 47409232 49464064 54743936 58349824 64535146 71423729 75411856 76128286 79427872 80379104 87906128 88958896 92814592 93696352 94818464 109487872 129070292 142847458 150823712 152256572 158855744 160758208 175812256 177917792 187392704 189636928 258140584 285694916 301647424 304513144 317711488 321516416 351624512 355835584 374785408 379273856 419478449 488977837 494833859 516281168 571389832 603294848 609026288 635422976 643032832 703249024 711671168 749570816 758547712 838956898 928508477 977955674 989667718 1032562336 1142779664 1206589696 1218052576 1406498048 1423342336 1677913796 1857016954 1955911348 1979335436 2065124672 2285559328 2436105152 3355827592 3714033908 3911822696 3958670872 4130249344 4571118656 4872210304 6356711881 6711655184 7428067816 7823645392 7917341744 8260498688 9142237312 9744420608 12713423762 13423310368 14856135632 15647290784 15834683488 18284474624 25426847524 26846620736 29712271264 31294581568 31669366976 50853695048 53693241472 59424542528 62589163136 63338733952 82637254453 101707390096 107386482944 118849085056 125178326272 126677467904 165274508906 203414780192 237698170112 330549017812 406829560384 661098035624 813659120768 1322196071248 1627318241536 2644392142496 5288784284992 10577568569984 21155137139968
• Sum of all divisors σ(n): 46754231374620
• Sum of proper divisors (its aliquot sum) s(n): 25599094234652
• 21155137139968 is an abundant number, because the sum of its proper divisors (25599094234652) is greater than itself. Its abundance is 4443957094684

Bases of 21155137139968

• Binary: 100110011110110010000011011110011010100000000₂
• Hexadecimal: 0x133D906F3500
• Base-36: 7HYJAFZ0G

Squares and roots of 21155137139968

• 21155137139968 squared (21155137139968²) is 447539827410853450823041024
• 21155137139968 cubed (21155137139968³) is 9467766424474214602126531424139694047232
• The square root of 21155137139968 is 4599471.3978856309
• The cube root of 21155137139968 is 27657.0134994419

Scales and comparisons

• 21,155,137,139,968 seconds is equal to 672,667 years, 48 weeks, 7 hours, 19 minutes, 28 seconds.
• To count from 1 to 21,155,137,139,968 would take you about one million, six hundred eighty-one thousand, six hundred sixty-nine 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 21155137139968 cubic inches would be around 2304.8 feet tall.

Recreational maths with 21155137139968

• 21155137139968 backwards is 86993173155112
• The number of decimal digits it has is: 14
• The sum of 21155137139968's digits is 61
• More coming soon!