72694720161

Names of 72694720161

• Cardinal: 72694720161 can be written as Seventy-two billion, six hundred ninety-four million, seven hundred twenty thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 7.2694720161 × 10¹⁰

Factors of 72694720161

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 820

Divisors of 72694720161

• Number of divisors d(n): 84
• Complete list of divisors:
  1 3 7 9 21 23 27 63 69 81 161 189 207 243 483 567 621 729 787 1449 1701 1863 2361 4347 5103 5509 5589 7083 13041 16527 16767 18101 21249 39123 49581 54303 63747 117369 126707 148743 162909 191241 380121 446229 488727 573723 619369 1140363 1338687 1466181 1858107 3421089 4016061 4335583 4398543 5574321 10263267 13006749 13195629 14245487 16722963 30789801 39020247 42736461 50168889 92369403 99718409 117060741 128209383 150506667 299155227 351182223 384628149 451520001 897465681 1053546669 1153884447 2692397043 3160640007 3461653341 8077191129 10384960023 24231573387 72694720161
• Sum of all divisors σ(n): 130143667392
• Sum of proper divisors (its aliquot sum) s(n): 57448947231
• 72694720161 is a deficient number, because the sum of its proper divisors (57448947231) is less than itself. Its deficiency is 15245772930

Bases of 72694720161

• Binary: 1000011101100111100010110011010100001₂
• Hexadecimal: 0x10ECF166A1
• Base-36: XE8K529

Squares and roots of 72694720161

• 72694720161 squared (72694720161²) is 5284522339286099865921
• 72694720161 cubed (72694720161³) is 384156872638956126270226715533281
• The square root of 72694720161 is 269619.5841570119
• The cube root of 72694720161 is 4173.5051750813

Scales and comparisons

• 72,694,720,161 seconds is equal to 2,311 years, 24 weeks, 2 days, 1 hour, 49 minutes, 21 seconds.
• To count from 1 to 72,694,720,161 would take you about four thousand, six hundred twenty-two 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 72694720161 cubic inches would be around 347.8 feet tall.

Recreational maths with 72694720161

• 72694720161 backwards is 16102749627
• The number of decimal digits it has is: 11
• The sum of 72694720161's digits is 45
• More coming soon!