21009563137161

Names of 21009563137161

• Cardinal: 21009563137161 can be written as Twenty-one trillion, nine billion, five hundred sixty-three million, one hundred thirty-seven thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 2.1009563137161 × 10¹³

Factors of 21009563137161

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4623

Divisors of 21009563137161

• Number of divisors d(n): 45
• Complete list of divisors:
  1 3 9 27 81 113 339 1017 3051 4507 9153 12769 13521 38307 40563 114921 121689 344763 365067 509291 1034289 1527873 4583619 13750857 20313049 41252571 57549883 60939147 172649649 182817441 517948947 548452323 1553846841 1645356969 2295374537 4661540523 6886123611 20658370833 61975112499 185925337497 259377322681 778131968043 2334395904129 7003187712387 21009563137161
• Sum of all divisors σ(n): 31671881506551
• Sum of proper divisors (its aliquot sum) s(n): 10662318369390
• 21009563137161 is a deficient number, because the sum of its proper divisors (10662318369390) is less than itself. Its deficiency is 10347244767771

Bases of 21009563137161

• Binary: 100110001101110101011100011000011010010001001₂
• Hexadecimal: 0x131BAB8C3489
• Base-36: 7G3NRFVK9

Squares and roots of 21009563137161

• 21009563137161 squared (21009563137161²) is 441401743214354360099139921
• 21009563137161 cubed (21009563137161³) is 9273657792914904933851624801622653704281
• 21009563137161 is a perfect square number. Its square root is 4583619
• The cube root of 21009563137161 is 27593.4290600575

Scales and comparisons

• 21,009,563,137,161 seconds is equal to 668,039 years, 6 weeks, 2 days, 19 minutes, 21 seconds.
• To count from 1 to 21,009,563,137,161 would take you about one million, six hundred seventy thousand and ninety-seven 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 21009563137161 cubic inches would be around 2299.5 feet tall.

Recreational maths with 21009563137161

• 21009563137161 backwards is 16173136590012
• The number of decimal digits it has is: 14
• The sum of 21009563137161's digits is 45
• More coming soon!