21358862481564864

Names of 21358862481564864

• Cardinal: 21358862481564864 can be written as Twenty-one quadrillion, three hundred fifty-eight trillion, eight hundred sixty-two billion, four hundred eighty-one million, five hundred sixty-four thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 2.1358862481564864 × 10¹⁶

Factors of 21358862481564864

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 26784810

Divisors of 21358862481564864

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 144 192 288 576 607 1214 1821 2281 2428 3642 4562 4856 5463 6843 7284 9124 9712 10926 13686 14568 18248 19424 20529 21852 27372 29136 36496 38848 41058 43704 54744 58272 72992 82116 87408 109488 116544 145984 164232 174816 218976 328464 349632 437952 656928 1313856 1384567 2769134 4153701 5538268 8307402 11076536 12461103 16614804 22153072 24922206 26781917 33229608 44306144 49844412 53563834 66459216 80345751 88612288 99688824 107127668 132918432 160691502 199377648 214255336 241037253 265836864 321383004 398755296 428510672 482074506 642766008 797510592 857021344 964149012 1285532016 1714042688 1928298024 2571064032 3856596048 5142128064 7713192096 15426384192 16256623619 32513247238 48769870857 61089552677 65026494476 97539741714 122179105354 130052988952 146309612571 183268658031 195079483428 244358210708 260105977904 292619225142 366537316062 390158966856 488716421416 520211955808 549805974093 585238450284 733074632124 780317933712 977432842832 1040423911616 1099611948186 1170476900568 1466149264248 1560635867424 1954865685664 2199223896372 2340953801136 2932298528496 3121271734848 3909731371328 4398447792744 4681907602272 5864597056992 8796895585488 9363815204544 11729194113984 17593791170976 35187582341952 37081358474939 74162716949878 111244075424817 148325433899756 222488150849634 296650867799512 333732226274451 444976301699268 593301735599024 667464452548902 889952603398536 1186603471198048 1334928905097804 1779905206797072 2373206942396096 2669857810195608 3559810413594144 5339715620391216 7119620827188288 10679431240782432 21358862481564864
• Sum of all divisors σ(n): 61349067886823808
• Sum of proper divisors (its aliquot sum) s(n): 39990205405258944
• 21358862481564864 is an abundant number, because the sum of its proper divisors (39990205405258944) is greater than itself. Its abundance is 18631342923694080

Bases of 21358862481564864

• Binary: 1001011111000011100010110110011000001010010010011000000₂
• Hexadecimal: 0x4BE1C5B30524C0
• Base-36: 5UB31YS1BK0

Squares and roots of 21358862481564864

• 21358862481564864 squared (21358862481564864²) is 456201006506399180354254239338496
• 21358862481564864 cubed (21358862481564864³) is 9743934561921657865016863827953821940018276204544
• The square root of 21358862481564864 is 146146715.6030708205
• The cube root of 21358862481564864 is 277455.0964069299

Scales and comparisons

• 21,358,862,481,564,864 seconds is equal to 679,145,759 years, 31 weeks, 6 days, 14 hours, 14 minutes, 24 seconds.
• To count from 1 to 21,358,862,481,564,864 would take you about two billion, thirty-seven million, four hundred thirty-seven thousand, two hundred seventy-eight 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 21358862481564864 cubic inches would be around 23121.3 feet tall.

Recreational maths with 21358862481564864

• 21358862481564864 backwards is 46846518426885312
• The number of decimal digits it has is: 17
• The sum of 21358862481564864's digits is 81
• More coming soon!