21050712621

Names of 21050712621

• Cardinal: 21050712621 can be written as Twenty-one billion, fifty million, seven hundred twelve thousand, six hundred twenty-one.

Scientific notation

• Scientific notation: 2.1050712621 × 10¹⁰

Factors of 21050712621

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 1260

Divisors of 21050712621

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 9 17 27 51 53 81 153 159 243 459 477 729 901 1187 1377 1431 2187 2703 3561 4131 4293 6561 8109 10683 12393 12879 19683 20179 24327 32049 37179 38637 60537 62911 72981 96147 111537 115911 181611 188733 218943 288441 334611 347733 544833 566199 656829 865323 1043199 1069487 1634499 1698597 1970487 2595969 3208461 4903497 5095791 5911461 7787907 9625383 14710491 15287373 17734383 23363721 28876149 44131473 45862119 86628447 132394419 137586357 259885341 397183257 412759071 779656023 1238277213 2338968069 7016904207 21050712621
• Sum of all divisors σ(n): 34092425664
• Sum of proper divisors (its aliquot sum) s(n): 13041713043
• 21050712621 is a deficient number, because the sum of its proper divisors (13041713043) is less than itself. Its deficiency is 8008999578

Bases of 21050712621

• Binary: 10011100110101110000110001000101101₂
• Hexadecimal: 0x4E6B8622D
• Base-36: 9O51TT9

Squares and roots of 21050712621

• 21050712621 squared (21050712621²) is 443132501851928689641
• 21050712621 cubed (21050712621³) is 9328254949509701140217790659061
• The square root of 21050712621 is 145088.6371188317
• The cube root of 21050712621 is 2761.1432208713

Scales and comparisons

• 21,050,712,621 seconds is equal to 669 years, 18 weeks, 12 hours, 10 minutes, 21 seconds.
• To count from 1 to 21,050,712,621 would take you about one thousand, three hundred thirty-eight 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 21050712621 cubic inches would be around 230.1 feet tall.

Recreational maths with 21050712621

• 21050712621 backwards is 12621705012
• 21050712621 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21050712621's digits is 27
• More coming soon!