21213659916422800

Names of 21213659916422800

• Cardinal: 21213659916422800 can be written as Twenty-one quadrillion, two hundred thirteen trillion, six hundred fifty-nine billion, nine hundred sixteen million, four hundred twenty-two thousand, eight hundred.

Scientific notation

• Scientific notation: 2.12136599164228 × 10¹⁶

Factors of 21213659916422800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 28634969

Divisors of 21213659916422800

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 1990433 3980866 7961732 9952165 15923464 19904330 26644529 31846928 39808660 49760825 53289058 79617320 99521650 106578116 133222645 159234640 199043300 213156232 266445290 398086600 426312464 532890580 666113225 796173200 1065781160 1332226450 2131562320 2664452900 5328905800 10657811600 53034149791057 106068299582114 212136599164228 265170748955285 424273198328456 530341497910570 848546396656912 1060682995821140 1325853744776425 2121365991642280 2651707489552850 4242731983284560 5303414979105700 10606829958211400 21213659916422800
• Sum of all divisors σ(n): 50965845467405220
• Sum of proper divisors (its aliquot sum) s(n): 29752185550982420
• 21213659916422800 is an abundant number, because the sum of its proper divisors (29752185550982420) is greater than itself. Its abundance is 8538525634559620

Bases of 21213659916422800

• Binary: 1001011010111011011011000010111101101000100111010010000₂
• Hexadecimal: 0x4B5DB617B44E90
• Base-36: 5SVM4TTRQ8G

Squares and roots of 21213659916422800

• 21213659916422800 squared (21213659916422800²) is 450019367049643397881148359840000
• 21213659916422800 cubed (21213659916422800³) is 9546557808394979520113945521811101699980352000000
• The square root of 21213659916422800 is 145649098.5774467469
• The cube root of 21213659916422800 is 276824.9312620483

Scales and comparisons

• 21,213,659,916,422,800 seconds is equal to 674,528,767 years, 9 weeks, 3 days, 21 hours, 26 minutes, 40 seconds.
• To count from 1 to 21,213,659,916,422,800 would take you about two billion, twenty-three million, five hundred eighty-six thousand, three 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 21213659916422800 cubic inches would be around 23068.7 feet tall.

Recreational maths with 21213659916422800

• 21213659916422800 backwards is 00822461995631212
• The number of decimal digits it has is: 17
• The sum of 21213659916422800's digits is 61
• More coming soon!