21006381439125

Names of 21006381439125

• Cardinal: 21006381439125 can be written as Twenty-one trillion, six billion, three hundred eighty-one million, four hundred thirty-nine thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 2.1006381439125 × 10¹³

Factors of 21006381439125

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 10338

Divisors of 21006381439125

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 9 15 25 27 45 59 75 125 135 177 225 295 375 531 675 885 1125 1475 1593 2655 3375 4425 7375 7965 10271 13275 22125 30813 39825 51355 66375 92439 154065 199125 256775 277317 462195 605989 770325 1283875 1386585 1817967 2310975 3029945 3851625 5453901 6932925 9089835 11554875 15149725 16361703 27269505 34664625 45449175 75748625 81808515 105493441 136347525 227245875 316480323 409042575 527467205 681737625 949440969 1582401615 2045212875 2637336025 2848322907 4747204845 6224113019 7912008075 13186680125 14241614535 18672339057 23736024225 31120565095 39560040375 56017017171 71208072675 93361695285 118680121125 155602825475 168051051513 280085085855 356040363375 466808476425 778014127375 840255257565 1400425429275 2334042382125 4201276287825 7002127146375 21006381439125
• Sum of all divisors σ(n): 39500590147200
• Sum of proper divisors (its aliquot sum) s(n): 18494208708075
• 21006381439125 is a deficient number, because the sum of its proper divisors (18494208708075) is less than itself. Its deficiency is 2512172731050

Bases of 21006381439125

• Binary: 100110001101011101101111001110101100010010101₂
• Hexadecimal: 0x131AEDE75895
• Base-36: 7G27551N9

Squares and roots of 21006381439125

• 21006381439125 squared (21006381439125²) is 441268061166015306080765625
• 21006381439125 cubed (21006381439125³) is 9269445209756459130890650773169330078125
• The square root of 21006381439125 is 4583271.9141596869
• The cube root of 21006381439125 is 27592.0360691499

Scales and comparisons

• 21,006,381,439,125 seconds is equal to 667,937 years, 49 weeks, 3 days, 19 hours, 18 minutes, 45 seconds.
• To count from 1 to 21,006,381,439,125 would take you about one million, six hundred sixty-nine thousand, eight hundred forty-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 21006381439125 cubic inches would be around 2299.3 feet tall.

Recreational maths with 21006381439125

• 21006381439125 backwards is 52193418360012
• 21006381439125 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21006381439125's digits is 45
• More coming soon!