81201061764

Names of 81201061764

• Cardinal: 81201061764 can be written as Eighty-one billion, two hundred one million, sixty-one thousand, seven hundred sixty-four.

Scientific notation

• Scientific notation: 8.1201061764 × 10¹⁰

Factors of 81201061764

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1764

Divisors of 81201061764

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 54 81 108 162 243 324 486 729 972 1458 1759 2187 2916 3518 4374 5277 6561 7036 8748 10554 13122 15831 21108 26244 31662 47493 63324 94986 142479 189972 284958 427437 569916 854874 1282311 1709748 2564622 3094081 3846933 5129244 6188162 7693866 9282243 11540799 12376324 15387732 18564486 23081598 27846729 37128972 46163196 55693458 83540187 111386916 167080374 250620561 334160748 501241122 751861683 1002482244 1503723366 2255585049 3007446732 4511170098 6766755147 9022340196 13533510294 20300265441 27067020588 40600530882 81201061764
• Sum of all divisors σ(n): 213263198967
• Sum of proper divisors (its aliquot sum) s(n): 132062137203
• 81201061764 is an abundant number, because the sum of its proper divisors (132062137203) is greater than itself. Its abundance is 50861075439

Bases of 81201061764

• Binary: 1001011100111111101011101111110000100₂
• Hexadecimal: 0x12E7F5DF84
• Base-36: 11AX0K90

Squares and roots of 81201061764

• 81201061764 squared (81201061764²) is 6593612431600942791696
• 81201061764 cubed (81201061764³) is 535408330306306381029137482311744
• 81201061764 is a perfect square number. Its square root is 284958
• The cube root of 81201061764 is 4330.3257681855

Scales and comparisons

• 81,201,061,764 seconds is equal to 2,581 years, 49 weeks, 2 hours, 29 minutes, 24 seconds.
• To count from 1 to 81,201,061,764 would take you about five thousand, one hundred sixty-three 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 81201061764 cubic inches would be around 360.9 feet tall.

Recreational maths with 81201061764

• 81201061764 backwards is 46716010218
• 81201061764 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81201061764's digits is 36
• More coming soon!