81126919160742

Names of 81126919160742

• Cardinal: 81126919160742 can be written as Eighty-one trillion, one hundred twenty-six billion, nine hundred nineteen million, one hundred sixty thousand, seven hundred forty-two.

Scientific notation

• Scientific notation: 8.1126919160742 × 10¹³

Factors of 81126919160742

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 4793035573

Divisors of 81126919160742

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 7 13 14 21 26 31 39 42 62 78 91 93 182 186 217 273 403 434 546 651 806 1209 1302 2418 2821 5642 8463 16926 4793035517 9586071034 14379106551 28758213102 33551248619 62309461721 67102497238 100653745857 124618923442 148584101027 186928385163 201307491714 297168202054 373856770326 436166232047 445752303081 872332464094 891504606162 1040088707189 1308498696141 1931593313351 2080177414378 2616997392282 3120266121567 3863186626702 5794779940053 6240532243134 11589559880106 13521153193457 27042306386914 40563459580371 81126919160742
• Sum of all divisors σ(n): 206138871558144
• Sum of proper divisors (its aliquot sum) s(n): 125011952397402
• 81126919160742 is an abundant number, because the sum of its proper divisors (125011952397402) is greater than itself. Its abundance is 43885033236660

Bases of 81126919160742

• Binary: 10010011100100011010101001100101100001110100110₂
• Hexadecimal: 0x49C8D532C3A6
• Base-36: SR96X176U

Squares and roots of 81126919160742

• 81126919160742 squared (81126919160742²) is 6581577012513567453633990564
• 81126919160742 cubed (81126919160742³) is 533943066244386025357456867764427227238488
• The square root of 81126919160742 is 9007048.3045635989
• The cube root of 81126919160742 is 43290.0739711283

Scales and comparisons

• 81,126,919,160,742 seconds is equal to 2,579,585 years, 4 weeks, 3 days, 18 hours, 25 minutes, 42 seconds.
• To count from 1 to 81,126,919,160,742 would take you about six million, four hundred forty-eight thousand, nine hundred sixty-two 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 81126919160742 cubic inches would be around 3607.5 feet tall.

Recreational maths with 81126919160742

• 81126919160742 backwards is 24706191962118
• The number of decimal digits it has is: 14
• The sum of 81126919160742's digits is 57
• More coming soon!