21029491494160

Names of 21029491494160

• Cardinal: 21029491494160 can be written as Twenty-one trillion, twenty-nine billion, four hundred ninety-one million, four hundred ninety-four thousand, one hundred sixty.

Scientific notation

• Scientific notation: 2.102949149416 × 10¹³

Factors of 21029491494160

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 8479633705

Divisors of 21029491494160

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 31 40 62 80 124 155 248 310 496 620 1240 2480 8479633667 16959267334 33918534668 42398168335 67837069336 84796336670 135674138672 169592673340 262868643677 339185346680 525737287354 678370693360 1051474574708 1314343218385 2102949149416 2628686436770 4205898298832 5257372873540 10514745747080 21029491494160
• Sum of all divisors σ(n): 50470779591936
• Sum of proper divisors (its aliquot sum) s(n): 29441288097776
• 21029491494160 is an abundant number, because the sum of its proper divisors (29441288097776) is greater than itself. Its abundance is 8411796603616

Bases of 21029491494160

• Binary: 100110010000001001111010111101100110100010000₂
• Hexadecimal: 0x13204F5ECD10
• Base-36: 7GCTC9Q8G

Squares and roots of 21029491494160

• 21029491494160 squared (21029491494160²) is 442239512502947789314105600
• 21029491494160 cubed (21029491494160³) is 9300072066562205507307559455708023296000
• The square root of 21029491494160 is 4585792.3518362669
• The cube root of 21029491494160 is 27602.1507697669

Scales and comparisons

• 21,029,491,494,160 seconds is equal to 668,672 years, 40 weeks, 4 days, 7 hours, 2 minutes, 40 seconds.
• To count from 1 to 21,029,491,494,160 would take you about one million, six hundred seventy-one thousand, six hundred eighty-one 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 21029491494160 cubic inches would be around 2300.2 feet tall.

Recreational maths with 21029491494160

• 21029491494160 backwards is 06149419492012
• The number of decimal digits it has is: 14
• The sum of 21029491494160's digits is 52
• More coming soon!