72131512761

Names of 72131512761

• Cardinal: 72131512761 can be written as Seventy-two billion, one hundred thirty-one million, five hundred twelve thousand, seven hundred sixty-one.

Scientific notation

• Scientific notation: 7.2131512761 × 10¹⁰

Factors of 72131512761

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 26633

Divisors of 72131512761

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 11 21 33 49 63 77 99 147 231 441 539 571 693 1617 1713 3997 4851 5139 6281 11991 18843 26041 27979 35973 43967 56529 78123 83937 131901 182287 234369 251811 286451 307769 395703 546861 859353 923307 1276009 1640583 2005157 2578059 2769921 3828027 6015471 11484081 14036099 14869411 18046413 42108297 44608233 104085877 126324891 133824699 163563521 312257631 490690563 728601139 936772893 1144944647 1472071689 2185803417 3434833941 6557410251 8014612529 10304501823 24043837587 72131512761
• Sum of all divisors σ(n): 132455445408
• Sum of proper divisors (its aliquot sum) s(n): 60323932647
• 72131512761 is a deficient number, because the sum of its proper divisors (60323932647) is less than itself. Its deficiency is 11807580114

Bases of 72131512761

• Binary: 1000011001011010111111000100110111001₂
• Hexadecimal: 0x10CB5F89B9
• Base-36: X4X8NG9

Squares and roots of 72131512761

• 72131512761 squared (72131512761²) is 5202955133190305843121
• 72131512761 cubed (72131512761³) is 375297024584627000564575275567081
• The square root of 72131512761 is 268573.1050589393
• The cube root of 72131512761 is 4162.6990459047

Scales and comparisons

• 72,131,512,761 seconds is equal to 2,293 years, 29 weeks, 11 hours, 19 minutes, 21 seconds.
• To count from 1 to 72,131,512,761 would take you about four thousand, five hundred eighty-seven 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 72131512761 cubic inches would be around 346.9 feet tall.

Recreational maths with 72131512761

• 72131512761 backwards is 16721513127
• The number of decimal digits it has is: 11
• The sum of 72131512761's digits is 36
• More coming soon!