12721133891585

Names of 12721133891585

• Cardinal: 12721133891585 can be written as Twelve trillion, seven hundred twenty-one billion, one hundred thirty-three million, eight hundred ninety-one thousand, five hundred eighty-five.

Scientific notation

• Scientific notation: 1.2721133891585 × 10¹³

Factors of 12721133891585

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 28680030

Divisors of 12721133891585

• Number of divisors d(n): 64
• Complete list of divisors:
  1 5 7 19 23 29 35 95 115 133 145 161 203 437 551 665 667 805 1015 2185 2755 3059 3335 3857 4669 12673 15295 19285 23345 63365 88711 443555 28679947 143399735 200759629 544918993 659638781 831718463 1003798145 2724594965 3298193905 3814432951 4158592315 4617471467 5822029241 12533136839 15802650797 19072164755 19129524649 23087357335 29110146205 62665684195 79013253985 87731957873 95647623245 110618555579 133906672543 363460968331 438659789365 553092777895 669533362715 1817304841655 2544226778317 12721133891585
• Sum of all divisors σ(n): 19823580057600
• Sum of proper divisors (its aliquot sum) s(n): 7102446166015
• 12721133891585 is a deficient number, because the sum of its proper divisors (7102446166015) is less than itself. Its deficiency is 5618687725570

Bases of 12721133891585

• Binary: 10111001000111011110101010101011000000000001₂
• Hexadecimal: 0xB91DEAAB001
• Base-36: 4IC0AO35T

Squares and roots of 12721133891585

• 12721133891585 squared (12721133891585²) is 161827247487632526533812225
• 12721133891585 cubed (12721133891585³) is 2058626082596835676423500480899897626625
• The square root of 12721133891585 is 3566669.8601896139
• The cube root of 12721133891585 is 23344.0000000011

Scales and comparisons

• 12,721,133,891,585 seconds is equal to 404,492 years, 36 weeks, 5 days, 23 hours, 13 minutes, 5 seconds.
• To count from 1 to 12,721,133,891,585 would take you about one million, eleven thousand, two hundred thirty-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 12721133891585 cubic inches would be around 1945.3 feet tall.

Recreational maths with 12721133891585

• 12721133891585 backwards is 58519833112721
• The number of decimal digits it has is: 14
• The sum of 12721133891585's digits is 56
• More coming soon!