81427020914421

Names of 81427020914421

• Cardinal: 81427020914421 can be written as Eighty-one trillion, four hundred twenty-seven billion, twenty million, nine hundred fourteen thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 8.1427020914421 × 10¹³

Factors of 81427020914421

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1151563

Divisors of 81427020914421

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 13 21 27 39 49 63 81 91 117 147 189 243 273 351 441 457 567 637 819 1053 1323 1371 1701 1911 2457 3159 3199 3969 4113 5733 5941 7371 9597 11907 12339 17199 17823 22113 22393 28791 37017 41587 51597 53469 67179 86373 111051 124761 154791 160407 201537 259119 291109 374283 481221 604611 777357 873327 1122849 1151083 1443663 1813833 2619981 3368547 3453249 5441499 7859943 8057581 10105641 10359747 14964079 23579829 24172743 31079241 44892237 56403067 70739487 72518229 93237723 104748553 134676711 169209201 217554687 279713169 314245659 404030133 507627603 526044931 652664061 733239871 942736977 1212090399 1522882809 1578134793 1957992183 2199719613 2828210931 3636271197 3682314517 4568648427 4734404379 6599158839 6838584103 8484632793 11046943551 13705945281 14203213137 19797476517 20515752309 25453898379 25776201619 33140830653 42609639411 47870088721 59392429551 61547256927 77328604857 99422491959 127828918233 143610266163 178177288653 184641770781 231985814571 298267475877 335090621047 430830798489 553925312343 695957443713 894802427631 1005271863141 1292492395467 1661775937029 2087872331139 3015815589423 3877477186401 6263616993417 9047446768269 11632431559203 27142340304807 81427020914421
• Sum of all divisors σ(n): 153135813614784
• Sum of proper divisors (its aliquot sum) s(n): 71708792700363
• 81427020914421 is a deficient number, because the sum of its proper divisors (71708792700363) is less than itself. Its deficiency is 9718228214058

Bases of 81427020914421

• Binary: 10010100000111010110100101010000001111011110101₂
• Hexadecimal: 0x4A0EB4A81EF5
• Base-36: SV321VAB9

Squares and roots of 81427020914421

• 81427020914421 squared (81427020914421²) is 6630359734997554947005765241
• 81427020914421 cubed (81427020914421³) is 539890440811780785857136578590170677440461
• The square root of 81427020914421 is 9023692.1996719831
• The cube root of 81427020914421 is 43343.3873100759

Scales and comparisons

• 81,427,020,914,421 seconds is equal to 2,589,127 years, 20 weeks, 3 days, 16 hours, 40 minutes, 21 seconds.
• To count from 1 to 81,427,020,914,421 would take you about six million, four hundred seventy-two thousand, eight hundred eighteen 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 81427020914421 cubic inches would be around 3611.9 feet tall.

Recreational maths with 81427020914421

• 81427020914421 backwards is 12441902072418
• The number of decimal digits it has is: 14
• The sum of 81427020914421's digits is 45
• More coming soon!