81133791317072018

Names of 81133791317072018

• Cardinal: 81133791317072018 can be written as Eighty-one quadrillion, one hundred thirty-three trillion, seven hundred ninety-one billion, three hundred seventeen million, seventy-two thousand and eighteen.

Scientific notation

• Scientific notation: 8.1133791317072018 × 10¹⁶

Factors of 81133791317072018

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 487749

Divisors of 81133791317072018

• Number of divisors d(n): 54
• Complete list of divisors:
  1 2 7 14 49 59 98 118 413 826 2891 3481 5782 6962 24367 48734 170569 341138 487681 975362 3413767 6827534 23896369 28773179 47792738 57546358 201412253 402824506 1409885771 1697617561 2819771542 3395235122 11883322927 23766645854 83183260489 166366520978 237832757761 475665515522 1664829304327 3329658608654 11653805130289 14032132707899 23307610260578 28064265415798 98224928955293 196449857910586 687574502687051 827895829766041 1375149005374102 1655791659532082 5795270808362287 11590541616724574 40566895658536009 81133791317072018
• Sum of all divisors σ(n): 144010646281436373
• Sum of proper divisors (its aliquot sum) s(n): 62876854964364355
• 81133791317072018 is a deficient number, because the sum of its proper divisors (62876854964364355) is less than itself. Its deficiency is 18256936352707663

Bases of 81133791317072018

• Binary: 100100000001111101100000011011010101111000001100010010010₂
• Hexadecimal: 0x1203EC0DABC1892
• Base-36: M6VJ16HRQMQ

Squares and roots of 81133791317072018

• 81133791317072018 squared (81133791317072018²) is 6582692093482190781255140598592324
• 81133791317072018 cubed (81133791317072018³) is 534078766617123995021524173075368512089680129989832
• The square root of 81133791317072018 is 284839939.8207211003
• The cube root of 81133791317072018 is 432912.9628532917

Scales and comparisons

• 81,133,791,317,072,018 seconds is equal to 2,579,803,600 years, 30 weeks, 4 days, 6 hours, 13 minutes, 38 seconds.
• To count from 1 to 81,133,791,317,072,018 would take you about seven billion, seven hundred thirty-nine million, four hundred ten thousand, eight hundred one 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 81133791317072018 cubic inches would be around 36076.1 feet tall.

Recreational maths with 81133791317072018

• 81133791317072018 backwards is 81027071319733118
• The number of decimal digits it has is: 17
• The sum of 81133791317072018's digits is 62
• More coming soon!