21387765528079353

Names of 21387765528079353

• Cardinal: 21387765528079353 can be written as Twenty-one quadrillion, three hundred eighty-seven trillion, seven hundred sixty-five billion, five hundred twenty-eight million, seventy-nine thousand, three hundred fifty-three.

Scientific notation

• Scientific notation: 2.1387765528079353 × 10¹⁶

Factors of 21387765528079353

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3223

Divisors of 21387765528079353

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 9 13 27 39 41 117 123 169 351 369 507 533 1107 1187 1521 1599 1681 1979 3561 4563 4797 5043 5937 6929 10683 14391 15129 15431 17811 20787 21853 25727 32049 45387 46293 48667 53433 62361 65559 77181 81139 138879 146001 187083 196677 200603 231543 243417 284089 334451 416637 438003 590031 601809 632671 694629 730251 852267 1003353 1054807 1314009 1408969 1805427 1898013 1995347 2190753 2349073 2556801 3010059 3164421 3326699 4226907 5416281 5694039 5986041 7047219 7670403 8224723 9030177 9493263 9980097 12680721 13712491 17082117 17958123 18316597 21141657 24674169 25939511 28479789 29940291 30537949 38042163 41137473 43247087 53874369 54949791 57767729 63424971 74022507 77818533 89820873 91613847 96311993 123412419 129741261 164849373 173303187 222067521 233455599 238115761 274841541 288935979 337213643 370237257 389223783 396993337 494548119 519909561 562212131 700366797 714347283 750980477 824524623 866807937 1011640929 1167671349 1190980011 1252055909 1559728683 1686636393 2143041849 2252941431 2368476889 2600423811 2788349651 3034922787 3572940033 3756167727 3948791713 5059909179 6429125547 6758824293 7105430667 8365048953 9104768361 9762746201 10718820099 11268503181 11846375139 15179727537 16276726817 20276472879 21316292001 25095146859 29288238603 30790199557 33805509543 35539125417 36248545463 48830180451 51334292269 63948876003 75285440577 87864715809 92370598671 106617376251 108745636389 114322335691 146490541353 154002876807 263594147427 277111796013 326236909167 342967007073 400272594241 439471624059 462008630421 471231091019 667345799497 831335388039 978710727501 1028901021219 1200817782723 1386025891263 1413693273057 1486190363983 2002037398491 3086703063657 3602453348169 4241079819171 4458571091949 4687215763331 6006112195473 10807360044507 12723239457513 13375713275847 14061647289993 18018336586419 19320474731779 40127139827541 42184941869979 57961424195337 60933804923303 126554825609937 173884272586011 182801414769909 521652817758033 548404244309727 792139464002939 1645212732929181 2376418392008817 7129255176026451 21387765528079353
• Sum of all divisors σ(n): 35215107326229600
• Sum of proper divisors (its aliquot sum) s(n): 13827341798150247
• 21387765528079353 is a deficient number, because the sum of its proper divisors (13827341798150247) is less than itself. Its deficiency is 7560423729929106

Bases of 21387765528079353

• Binary: 1001011111111000000111100110110110101110010101111111001₂
• Hexadecimal: 0x4BFC0F36D72BF9
• Base-36: 5ULBVUBOD89

Squares and roots of 21387765528079353

• 21387765528079353 squared (21387765528079353²) is 457436514284099485499893064898609
• 21387765528079353 cubed (21387765528079353³) is 9783544911490241534215134887597609399729451319977
• The square root of 21387765528079353 is 146245565.8407438793
• The cube root of 21387765528079353 is 277580.1917549605

Scales and comparisons

• 21,387,765,528,079,353 seconds is equal to 680,064,787 years, 4 weeks, 4 days, 22 hours, 2 minutes, 33 seconds.
• To count from 1 to 21,387,765,528,079,353 would take you about two billion, forty million, one hundred ninety-four thousand, three hundred sixty-one 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 21387765528079353 cubic inches would be around 23131.7 feet tall.

Recreational maths with 21387765528079353

• 21387765528079353 backwards is 35397082556778312
• The number of decimal digits it has is: 17
• The sum of 21387765528079353's digits is 81
• More coming soon!