21357916425

Names of 21357916425

• Cardinal: 21357916425 can be written as Twenty-one billion, three hundred fifty-seven million, nine hundred sixteen thousand, four hundred twenty-five.

Scientific notation

• Scientific notation: 2.1357916425 × 10¹⁰

Factors of 21357916425

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 164

Divisors of 21357916425

• Number of divisors d(n): 108
• Complete list of divisors:
  1 3 5 9 15 17 25 45 51 75 85 139 153 225 255 289 417 425 695 765 867 1251 1275 1445 2085 2363 2601 3475 3825 4335 4913 6255 7089 7225 10425 11815 13005 14739 19321 21267 21675 24565 31275 35445 40171 44217 57963 59075 65025 73695 96605 106335 120513 122825 173889 177225 200855 221085 289815 328457 361539 368475 483025 531675 602565 682907 869445 985371 1004275 1105425 1449075 1642285 1807695 2048721 2956113 3012825 3414535 4347225 4926855 5583769 6146163 8211425 9038475 10243605 14780565 16751307 17072675 24634275 27918845 30730815 50253921 51218025 73902825 83756535 94924073 139594225 153654075 251269605 284772219 418782675 474620365 854316657 1256348025 1423861095 2373101825 4271583285 7119305475 21357916425
• Sum of all divisors σ(n): 40939327260
• Sum of proper divisors (its aliquot sum) s(n): 19581410835
• 21357916425 is a deficient number, because the sum of its proper divisors (19581410835) is less than itself. Its deficiency is 1776505590

Bases of 21357916425

• Binary: 10011111001000001111111000100001001₂
• Hexadecimal: 0x4F907F109
• Base-36: 9T7Y9S9

Squares and roots of 21357916425

• 21357916425 squared (21357916425²) is 456160594017284780625
• 21357916425 cubed (21357916425³) is 9742639843399523350013209265625
• The square root of 21357916425 is 146143.4789000179
• The cube root of 21357916425 is 2774.5099987025

Scales and comparisons

• 21,357,916,425 seconds is equal to 679 years, 6 weeks, 2 hours, 33 minutes, 45 seconds.
• To count from 1 to 21,357,916,425 would take you about one thousand, three hundred fifty-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 21357916425 cubic inches would be around 231.2 feet tall.

Recreational maths with 21357916425

• 21357916425 backwards is 52461975312
• 21357916425 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21357916425's digits is 45
• More coming soon!