81789551813472

Names of 81789551813472

• Cardinal: 81789551813472 can be written as Eighty-one trillion, seven hundred eighty-nine billion, five hundred fifty-one million, eight hundred thirteen thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 8.1789551813472 × 10¹³

Factors of 81789551813472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 350032

Divisors of 81789551813472

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 96 457 914 1371 1828 2742 3656 5417 5484 7312 10834 10968 14624 16251 21668 21936 32502 43336 43872 65004 86672 130008 173344 260016 344153 520032 688306 1032459 1376612 2064918 2475569 2753224 4129836 4951138 5506448 7426707 8259672 9902276 11012896 14853414 16519344 19804552 29706828 33038688 39609104 59413656 79218208 118827312 157277921 237654624 314555842 471833763 629111684 943667526 1258223368 1864276801 1887335052 2516446736 3728553602 3774670104 5032893472 5592830403 7457107204 7549340208 11185660806 14914214408 15098680416 22371321612 29828428816 44742643224 59656857632 89485286448 178970572896 851974498057 1703948996114 2555923494171 3407897992228 5111846988342 6815795984456 10223693976684 13631591968912 20447387953368 27263183937824 40894775906736 81789551813472
• Sum of all divisors σ(n): 215207717350752
• Sum of proper divisors (its aliquot sum) s(n): 133418165537280
• 81789551813472 is an abundant number, because the sum of its proper divisors (133418165537280) is greater than itself. Its abundance is 51628613723808

Bases of 81789551813472

• Binary: 10010100110001100011101001011101010001101100000₂
• Hexadecimal: 0x4A631D2EA360
• Base-36: SZPLNEMAO

Squares and roots of 81789551813472

• 81789551813472 squared (81789551813472²) is 6689530785848620923880694784
• 81789551813472 cubed (81789551813472³) is 547133724816981846759256564142478531330048
• The square root of 81789551813472 is 9043757.6158072701
• The cube root of 81789551813472 is 43407.6168282999

Scales and comparisons

• 81,789,551,813,472 seconds is equal to 2,600,654 years, 39 weeks, 2 days, 4 hours, 11 minutes, 12 seconds.
• To count from 1 to 81,789,551,813,472 would take you about six million, five hundred one thousand, six hundred thirty-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 81789551813472 cubic inches would be around 3617.3 feet tall.

Recreational maths with 81789551813472

• 81789551813472 backwards is 27431815598718
• The number of decimal digits it has is: 14
• The sum of 81789551813472's digits is 69
• More coming soon!