21231364165

Names of 21231364165

• Cardinal: 21231364165 can be written as Twenty-one billion, two hundred thirty-one million, three hundred sixty-four thousand, one hundred sixty-five.

Scientific notation

• Scientific notation: 2.1231364165 × 10¹⁰

Factors of 21231364165

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 4130

Divisors of 21231364165

• Number of divisors d(n): 64
• Complete list of divisors:
  1 5 11 31 43 55 73 155 215 341 365 473 803 1333 1705 2263 2365 3139 3967 4015 6665 11315 14663 15695 19835 24893 34529 43637 73315 97309 122977 124465 170581 172645 218185 289591 486545 614885 852905 1070399 1352747 1447955 1876391 3185501 5288011 5351995 6763735 8977321 9381955 12452413 15927505 26440055 44886605 58168121 62262065 98750531 136976543 290840605 386024803 493752655 684882715 1930124015 4246272833 21231364165
• Sum of all divisors σ(n): 29767237632
• Sum of proper divisors (its aliquot sum) s(n): 8535873467
• 21231364165 is a deficient number, because the sum of its proper divisors (8535873467) is less than itself. Its deficiency is 12695490698

Bases of 21231364165

• Binary: 10011110001011111001110100001000101₂
• Hexadecimal: 0x4F17CE845
• Base-36: 9R4LTFP

Squares and roots of 21231364165

• 21231364165 squared (21231364165²) is 450770824306846147225
• 21231364165 cubed (21231364165³) is 9570479525815884254361179192125
• The square root of 21231364165 is 145709.8629640423
• The cube root of 21231364165 is 2769.0191962153

Scales and comparisons

• 21,231,364,165 seconds is equal to 675 years, 4 weeks, 5 days, 9 hours, 9 minutes, 25 seconds.
• To count from 1 to 21,231,364,165 would take you about one thousand, three hundred fifty 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 21231364165 cubic inches would be around 230.8 feet tall.

Recreational maths with 21231364165

• 21231364165 backwards is 56146313212
• The number of decimal digits it has is: 11
• The sum of 21231364165's digits is 34
• More coming soon!