81977379581240

Names of 81977379581240

• Cardinal: 81977379581240 can be written as Eighty-one trillion, nine hundred seventy-seven billion, three hundred seventy-nine million, five hundred eighty-one thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.197737958124 × 10¹³

Factors of 81977379581240

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 33234

Divisors of 81977379581240

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 8 10 11 13 20 22 26 40 44 52 55 65 88 104 110 130 143 169 220 260 286 338 440 520 572 676 715 845 1144 1352 1430 1690 1859 2860 3380 3718 5720 6760 7436 9295 14872 18590 33203 37180 66406 74360 132812 166015 265624 332030 365233 431639 664060 730466 863278 1328120 1460932 1726556 1826165 2158195 2921864 3453112 3652330 4316390 4748029 5611307 7304660 8632780 9496058 11222614 14609320 17265560 18992116 22445228 23740145 28056535 37984232 44890456 47480290 56113070 61724377 94960580 112226140 123448754 189921160 224452280 246897508 308621885 493795016 617243770 1102439209 1234487540 2204878418 2468975080 4409756836 5512196045 8819513672 11024392090 12126831299 14331709717 22048784180 24253662598 28663419434 44097568360 48507325196 57326838868 60634156495 71658548585 97014650392 114653677736 121268312990 143317097170 157648806887 186312226321 242536625980 286634194340 315297613774 372624452642 485073251960 573268388680 630595227548 745248905284 788244034435 931561131605 1261190455096 1490497810568 1576488068870 1863122263210 2049434489531 3152976137740 3726244526420 4098868979062 6305952275480 7452489052840 8197737958124 10247172447655 16395475916248 20494344895310 40988689790620 81977379581240
• Sum of all divisors σ(n): 217892647705320
• Sum of proper divisors (its aliquot sum) s(n): 135915268124080
• 81977379581240 is an abundant number, because the sum of its proper divisors (135915268124080) is greater than itself. Its abundance is 53937888542840

Bases of 81977379581240

• Binary: 10010101000111011011000100101101110110100111000₂
• Hexadecimal: 0x4A8ED896ED38
• Base-36: T23VZ7JG8

Squares and roots of 81977379581240

• 81977379581240 squared (81977379581240²) is 6720290763006704877759937600
• 81977379581240 cubed (81977379581240³) is 550911826775301628395292218800736530624000
• The square root of 81977379581240 is 9054136.0483063209
• The cube root of 81977379581240 is 43440.8196126265

Scales and comparisons

• 81,977,379,581,240 seconds is equal to 2,606,627 years, 5 weeks, 16 hours, 7 minutes, 20 seconds.
• To count from 1 to 81,977,379,581,240 would take you about six million, five hundred sixteen thousand, five hundred sixty-seven 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 81977379581240 cubic inches would be around 3620.1 feet tall.

Recreational maths with 81977379581240

• 81977379581240 backwards is 04218597377918
• The number of decimal digits it has is: 14
• The sum of 81977379581240's digits is 71
• More coming soon!