21055478459949

Names of 21055478459949

• Cardinal: 21055478459949 can be written as Twenty-one trillion, fifty-five billion, four hundred seventy-eight million, four hundred fifty-nine thousand, nine hundred forty-nine.

Scientific notation

• Scientific notation: 2.1055478459949 × 10¹³

Factors of 21055478459949

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 566255

Divisors of 21055478459949

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 9 31 93 279 317 421 951 1263 2853 3789 9827 13051 29481 39153 88443 117459 133457 400371 565483 1201113 1696449 4137167 5089347 12411501 17529973 37234503 52589919 157769757 179258111 238068343 537774333 714205029 1613322999 2142615087 5557001441 7380118633 16671004323 22140355899 50013012969 66421067697 75467664731 226402994193 679208982579 2339497606661 7018492819983 21055478459949
• Sum of all divisors σ(n): 31568447399424
• Sum of proper divisors (its aliquot sum) s(n): 10512968939475
• 21055478459949 is a deficient number, because the sum of its proper divisors (10512968939475) is less than itself. Its deficiency is 10542509520474

Bases of 21055478459949

• Binary: 100110010011001011100010100000110111000101101₂
• Hexadecimal: 0x13265C506E2D
• Base-36: 7GOR48LD9

Squares and roots of 21055478459949

• 21055478459949 squared (21055478459949²) is 443333173177376312797082601
• 21055478459949 cubed (21055478459949³) is 9334592078417086721581148864243623247349
• The square root of 21055478459949 is 4588624.8985887919
• The cube root of 21055478459949 is 27613.5157756997

Scales and comparisons

• 21,055,478,459,949 seconds is equal to 669,499 years, 4 weeks, 3 days, 8 hours, 39 minutes, 9 seconds.
• To count from 1 to 21,055,478,459,949 would take you about one million, six hundred seventy-three thousand, seven hundred forty-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 21055478459949 cubic inches would be around 2301.1 feet tall.

Recreational maths with 21055478459949

• 21055478459949 backwards is 94995487455012
• The number of decimal digits it has is: 14
• The sum of 21055478459949's digits is 72
• More coming soon!