21721004788586129

Names of 21721004788586129

• Cardinal: 21721004788586129 can be written as Twenty-one quadrillion, seven hundred twenty-one trillion, four billion, seven hundred eighty-eight million, five hundred eighty-six thousand, one hundred twenty-nine.

Scientific notation

• Scientific notation: 2.1721004788586129 × 10¹⁶

Factors of 21721004788586129

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1815262

Divisors of 21721004788586129

• Number of divisors d(n): 64
• Complete list of divisors:
  1 13 23 31 109 299 403 713 1417 2507 3379 9269 11923 32591 43927 77717 154999 274229 369613 1010321 1299607 1803163 3564977 4804969 8501099 16894891 23441119 29890961 40287817 41472749 55898053 110514287 196544767 388582493 523741621 539145737 726674689 926619791 1285655219 2555081971 4520529641 6092887777 12046057283 16713517847 21499112449 58766885333 79207541101 140136418871 279488461837 494479586327 666472485919 1821773445323 2343403256941 6428234622251 8664142316947 15328867176137 30464242340233 53898274909643 72645500965171 199275273289781 700677573825359 944391512547223 1670846522198933 21721004788586129
• Sum of all divisors σ(n): 25429577015377920
• Sum of proper divisors (its aliquot sum) s(n): 3708572226791791
• 21721004788586129 is a deficient number, because the sum of its proper divisors (3708572226791791) is less than itself. Its deficiency is 18012432561794338

Bases of 21721004788586129

• Binary: 1001101001010110010001110000110100101101001011010010001₂
• Hexadecimal: 0x4D2B2386969691
• Base-36: 5XVGBUFEE8H

Squares and roots of 21721004788586129

• 21721004788586129 squared (21721004788586129²) is 471802049025781546575114851204641
• 21721004788586129 cubed (21721004788586129³) is 10248014566153748571793546996778440221442833024689
• The square root of 21721004788586129 is 147380476.2802255603
• The cube root of 21721004788586129 is 279014.4123479271

Scales and comparisons

• 21,721,004,788,586,129 seconds is equal to 690,660,764 years, 41 weeks, 3 days, 9 hours, 55 minutes, 29 seconds.
• To count from 1 to 21,721,004,788,586,129 would take you about two billion, seventy-one million, nine hundred eighty-two thousand, two hundred ninety-four 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 21721004788586129 cubic inches would be around 23251.2 feet tall.

Recreational maths with 21721004788586129

• 21721004788586129 backwards is 92168588740012712
• The number of decimal digits it has is: 17
• The sum of 21721004788586129's digits is 71
• More coming soon!