91989121743

Names of 91989121743

• Cardinal: 91989121743 can be written as Ninety-one billion, nine hundred eighty-nine million, one hundred twenty-one thousand, seven hundred forty-three.

Scientific notation

• Scientific notation: 9.1989121743 × 10¹⁰

Factors of 91989121743

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2231

Divisors of 91989121743

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 27 43 71 129 213 387 639 1021 1093 1161 1917 3053 3063 3279 9159 9189 9837 27477 27567 29511 43903 46999 72491 77603 82431 131709 140997 217473 232809 395127 422991 652419 698427 1115953 1185381 1268973 1957257 2095281 3117113 3336929 3347859 9351339 10010787 10043577 28054017 30032361 30130731 47985979 79232663 84162051 90097083 143957937 237697989 431873811 713093967 1295621433 2139281901 3407004509 10221013527 30663040581 91989121743
• Sum of all divisors σ(n): 141681576960
• Sum of proper divisors (its aliquot sum) s(n): 49692455217
• 91989121743 is a deficient number, because the sum of its proper divisors (49692455217) is less than itself. Its deficiency is 42296666526

Bases of 91989121743

• Binary: 1010101101010111110101001101011001111₂
• Hexadecimal: 0x156AFA9ACF
• Base-36: 169BY4LR

Squares and roots of 91989121743

• 91989121743 squared (91989121743²) is 8461998519048475358049
• 91989121743 cubed (91989121743³) is 778411811957835904230104975959407
• The square root of 91989121743 is 303297.0849563181
• The cube root of 91989121743 is 4514.1794996913

Scales and comparisons

• 91,989,121,743 seconds is equal to 2,924 years, 50 weeks, 2 days, 21 hours, 49 minutes, 3 seconds.
• To count from 1 to 91,989,121,743 would take you about five thousand, eight hundred forty-nine 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 91989121743 cubic inches would be around 376.2 feet tall.

Recreational maths with 91989121743

• 91989121743 backwards is 34712198919
• The number of decimal digits it has is: 11
• The sum of 91989121743's digits is 54
• More coming soon!