21387203737218

Names of 21387203737218

• Cardinal: 21387203737218 can be written as Twenty-one trillion, three hundred eighty-seven billion, two hundred three million, seven hundred thirty-seven thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 2.1387203737218 × 10¹³

Factors of 21387203737218

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 267099

Divisors of 21387203737218

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 9 11 18 22 27 29 33 54 58 66 87 99 174 198 261 297 319 522 594 638 783 957 1566 1914 2871 4733 5742 8613 9466 14199 17226 28398 42597 52063 85194 104126 127791 137257 156189 255582 262321 274514 312378 411771 468567 524642 786963 823542 937134 1235313 1405701 1509827 1573926 2360889 2470626 2811402 2885531 3019654 3705939 4529481 4721778 5771062 7082667 7411878 7607309 8656593 9058962 13588443 14165334 15214618 17313186 22821927 25969779 27176886 40765329 45643854 51939558 68465781 77909337 81530658 83680399 136931562 155818674 167360798 205397343 251041197 410794686 502082394 753123591 1241565293 1506247182 2259370773 2483130586 3724695879 4518741546 7449391758 11174087637 13657218223 22348175274 27314436446 33522262911 36005393497 40971654669 67044525822 72010786994 81943309338 108016180491 122914964007 216032360982 245829928014 324048541473 368744892021 396059328467 648097082946 737489784042 792118656934 972145624419 1188177985401 1944291248838 2376355970802 3564533956203 7129067912406 10693601868609 21387203737218
• Sum of all divisors σ(n): 53647157433600
• Sum of proper divisors (its aliquot sum) s(n): 32259953696382
• 21387203737218 is an abundant number, because the sum of its proper divisors (32259953696382) is greater than itself. Its abundance is 10872749959164

Bases of 21387203737218

• Binary: 100110111001110011000101011100111011010000010₂
• Hexadecimal: 0x137398AE7682
• Base-36: 7KX58WJGI

Squares and roots of 21387203737218

• 21387203737218 squared (21387203737218²) is 457412483697271585998379524
• 21387203737218 cubed (21387203737218³) is 9782773980780454362214464637384727924232
• The square root of 21387203737218 is 4624630.1189628127
• The cube root of 21387203737218 is 27757.7761340865

Scales and comparisons

• 21,387,203,737,218 seconds is equal to 680,046 years, 48 weeks, 7 hours, 18 seconds.
• To count from 1 to 21,387,203,737,218 would take you about one million, seven hundred thousand, one hundred seventeen 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 21387203737218 cubic inches would be around 2313.1 feet tall.

Recreational maths with 21387203737218

• 21387203737218 backwards is 81273730278312
• 21387203737218 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21387203737218's digits is 54
• More coming soon!