81529645321712

Names of 81529645321712

• Cardinal: 81529645321712 can be written as Eighty-one trillion, five hundred twenty-nine billion, six hundred forty-five million, three hundred twenty-one thousand, seven hundred twelve.

Scientific notation

• Scientific notation: 8.1529645321712 × 10¹³

Factors of 81529645321712

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 259366

Divisors of 81529645321712

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 67 98 112 134 196 268 392 469 536 784 938 1072 1876 3283 3752 6131 6566 7504 12262 13132 24524 26264 42917 49048 52528 85834 98096 171668 253159 300419 343336 410777 506318 600838 686672 821554 1012636 1201676 1643108 1772113 2025272 2403352 2875439 3286216 3544226 4050544 4806704 5750878 6572432 7088452 11501756 12404791 14176904 16961653 20128073 23003512 24809582 28353808 33923306 40256146 46007024 49619164 67846612 80512292 99238328 118731571 135693224 161024584 198476656 237463142 271386448 322049168 474926284 831120997 949852568 1552117829 1662241994 1899705136 3104235658 3324483988 6208471316 6648967976 10864824803 12416942632 13297935952 21729649606 24833885264 43459299212 76053773621 86918598424 103991894543 152107547242 173837196848 207983789086 304215094484 415967578172 608430188968 727943261801 831935156344 1216860377936 1455886523602 1663870312688 2911773047204 5095602832607 5823546094408 10191205665214 11647092188816 20382411330428 40764822660856 81529645321712
• Sum of all divisors σ(n): 186527425230720
• Sum of proper divisors (its aliquot sum) s(n): 104997779909008
• 81529645321712 is an abundant number, because the sum of its proper divisors (104997779909008) is greater than itself. Its abundance is 23468134587296

Bases of 81529645321712

• Binary: 10010100010011010011001100011000100110111110000₂
• Hexadecimal: 0x4A26998C4DF0
• Base-36: SWE79SHRK

Squares and roots of 81529645321712

• 81529645321712 squared (81529645321712²) is 6647083066284155407978610944
• 81529645321712 cubed (81529645321712³) is 541934324818105046957734522469049764016128
• The square root of 81529645321712 is 9029376.7958653713
• The cube root of 81529645321712 is 43361.5885656807

Scales and comparisons

• 81,529,645,321,712 seconds is equal to 2,592,390 years, 27 weeks, 5 days, 4 hours, 28 minutes, 32 seconds.
• To count from 1 to 81,529,645,321,712 would take you about six million, four hundred eighty thousand, nine hundred seventy-six 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 81529645321712 cubic inches would be around 3613.5 feet tall.

Recreational maths with 81529645321712

• 81529645321712 backwards is 21712354692518
• 81529645321712 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81529645321712's digits is 56
• More coming soon!