21017539849751984

Names of 21017539849751984

• Cardinal: 21017539849751984 can be written as Twenty-one quadrillion, seventeen trillion, five hundred thirty-nine billion, eight hundred forty-nine million, seven hundred fifty-one thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1017539849751984 × 10¹⁶

Factors of 21017539849751984

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1561141

Divisors of 21017539849751984

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 44 49 56 77 88 98 112 154 176 196 308 392 539 616 784 1078 1232 2156 4312 8624 1561121 3122242 6244484 10927847 12488968 17172331 21855694 24977936 34344662 43711388 68689324 76494929 87422776 120206317 137378648 152989858 174845552 240412634 274757296 305979716 480825268 611959432 841444219 961650536 1223918864 1682888438 1923301072 3365776876 6731553752 13463107504 2437098776641 4874197553282 9748395106564 17059691436487 19496790213128 26808086543051 34119382872974 38993580426256 53616173086102 68238765745948 107232346172204 119417840055409 136477531491896 187656605801357 214464692344408 238835680110818 272955062983792 375313211602714 428929384688816 477671360221636 750626423205428 955342720443272 1313596240609499 1501252846410856 1910685440886544 2627192481218998 3002505692821712 5254384962437996 10508769924875992 21017539849751984
• Sum of all divisors σ(n): 51676275561926652
• Sum of proper divisors (its aliquot sum) s(n): 30658735712174668
• 21017539849751984 is an abundant number, because the sum of its proper divisors (30658735712174668) is greater than itself. Its abundance is 9641195862422684

Bases of 21017539849751984

• Binary: 1001010101010110101011101010100110011000000110110110000₂
• Hexadecimal: 0x4AAB5754CC0DB0
• Base-36: 5QY3GIHQSVK

Squares and roots of 21017539849751984

• 21017539849751984 squared (21017539849751984²) is 441736981335912650173186311936256
• 21017539849751984 cubed (21017539849751984³) is 9284224608336692521971045000749438163460417531904
• The square root of 21017539849751984 is 144974273.0616435409
• The cube root of 21017539849751984 is 275969.2075574663

Scales and comparisons

• 21,017,539,849,751,984 seconds is equal to 668,292,755 years, 36 weeks, 3 days, 19 hours, 59 minutes, 44 seconds.
• To count from 1 to 21,017,539,849,751,984 would take you about two billion, four million, eight hundred seventy-eight thousand, two hundred sixty-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 21017539849751984 cubic inches would be around 22997.4 feet tall.

Recreational maths with 21017539849751984

• 21017539849751984 backwards is 48915794893571012
• The number of decimal digits it has is: 17
• The sum of 21017539849751984's digits is 83
• More coming soon!