21315501025

Names of 21315501025

• Cardinal: 21315501025 can be written as Twenty-one billion, three hundred fifteen million, five hundred one thousand and twenty-five.

Scientific notation

• Scientific notation: 2.1315501025 × 10¹⁰

Factors of 21315501025

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5463

Divisors of 21315501025

• Number of divisors d(n): 108
• Complete list of divisors:
  1 5 7 13 19 25 35 49 65 91 95 133 169 175 245 247 325 455 475 637 665 845 931 1183 1225 1235 1729 2275 3185 3211 3325 4225 4655 5419 5915 6175 8281 8645 12103 15925 16055 22477 23275 27095 29575 37933 41405 43225 60515 70447 80275 102961 112385 135475 157339 189665 207025 265531 302575 352235 493129 514805 561925 720727 786695 915811 948325 1327655 1338493 1761175 2465645 2574025 3451903 3603635 3933475 4579055 5045089 6410677 6638275 6692465 9369451 12328225 17259515 17400409 18018175 22895275 25225445 32053385 33462325 44874739 46847255 65586157 86297575 87002045 121802863 126127225 160266925 224373695 234236275 327930785 435010225 609014315 852620041 1121868475 1639653925 3045071575 4263100205 21315501025
• Sum of all divisors σ(n): 35052332400
• Sum of proper divisors (its aliquot sum) s(n): 13736831375
• 21315501025 is a deficient number, because the sum of its proper divisors (13736831375) is less than itself. Its deficiency is 7578669650

Bases of 21315501025

• Binary: 10011110110100000001011101111100001₂
• Hexadecimal: 0x4F680BBE1
• Base-36: 9SIP5UP

Squares and roots of 21315501025

• 21315501025 squared (21315501025²) is 454350583946776050625
• 21315501025 cubed (21315501025³) is 9684710337826853452542639390625
• The square root of 21315501025 is 145998.2911715065
• The cube root of 21315501025 is 2772.6721174853

Scales and comparisons

• 21,315,501,025 seconds is equal to 677 years, 39 weeks, 6 days, 4 hours, 30 minutes, 25 seconds.
• To count from 1 to 21,315,501,025 would take you about one thousand, three hundred fifty-five 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 21315501025 cubic inches would be around 231.1 feet tall.

Recreational maths with 21315501025

• 21315501025 backwards is 52010551312
• 21315501025 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21315501025's digits is 25
• More coming soon!