21668393100816

Names of 21668393100816

• Cardinal: 21668393100816 can be written as Twenty-one trillion, six hundred sixty-eight billion, three hundred ninety-three million, one hundred thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 2.1668393100816 × 10¹³

Factors of 21668393100816

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 5868589

Divisors of 21668393100816

• Number of divisors d(n): 400
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 27 28 33 36 37 42 44 48 54 56 63 66 72 74 77 81 84 88 99 108 111 112 126 132 144 148 154 162 168 176 189 198 216 222 231 252 259 264 296 297 308 324 333 336 378 396 407 432 444 462 504 518 528 567 592 594 616 648 666 693 756 777 792 814 888 891 924 999 1008 1036 1134 1188 1221 1232 1296 1332 1386 1512 1554 1584 1628 1776 1782 1848 1998 2072 2079 2268 2331 2376 2442 2664 2772 2849 2997 3024 3108 3256 3564 3663 3696 3996 4144 4158 4536 4662 4752 4884 5328 5544 5698 5994 6216 6237 6512 6993 7128 7326 7992 8316 8547 9072 9324 9768 10989 11088 11396 11988 12432 12474 13986 14256 14652 15984 16632 17094 18648 19536 20979 21978 22792 23976 24948 25641 27972 29304 32967 33264 34188 37296 41958 43956 45584 47952 49896 51282 55944 58608 65934 68376 76923 83916 87912 99792 102564 111888 131868 136752 153846 167832 175824 205128 230769 263736 307692 335664 410256 461538 527472 615384 923076 1230768 1846152 3692304 5868529 11737058 17605587 23474116 35211174 41079703 46948232 52816761 64553819 70422348 82159406 93896464 105633522 123239109 129107638 140844696 158450283 164318812 193661457 211267044 217135573 246478218 258215276 281689392 316900566 328637624 369717327 387322914 422534088 434271146 451876733 475350849 492956436 516430552 580984371 633801132 651406719 657275248 739434654 774645828 845068176 868542292 903753466 950701698 985912872 1032861104 1109151981 1161968742 1267602264 1302813438 1355630199 1478869308 1519949011 1549291656 1737084584 1742953113 1807506932 1901403396 1954220157 1971825744 2218303962 2323937484 2388491303 2535204528 2605626876 2711260398 2957738616 3039898022 3098583312 3327455943 3474169168 3485906226 3615013864 3802806792 3908440314 4066890597 4436607924 4559847033 4647874968 4776982606 5211253752 5228859339 5422520796 5862660471 5915477232 6079796044 6654911886 6971812452 7165473909 7230027728 7605613584 7816880628 8133781194 8873215848 9119694066 9295749936 9553965212 10422507504 10457718678 10845041592 11725320942 12159592088 12200671791 13309823772 13679541099 13943624904 14330947818 15633761256 16267562388 16719439121 17587981413 17746431696 18239388132 19107930424 20915437356 21496421727 21690083184 23450641884 24319184176 24401343582 26619647544 27359082198 27887249808 28661895636 31267522512 32535124776 33438878242 35175962826 36478776264 36602015373 38215860848 41038623297 41830874712 42992843454 46901283768 48802687164 50158317363 53239295088 54718164396 57323791272 64489265181 65070249552 66877756484 70351925652 72957552528 73204030746 82077246594 83661749424 85985686908 93802567536 97605374328 100316634726 109436328792 114647582544 123115869891 128978530362 133755512968 140703851304 146408061492 150474952089 164154493188 171971373816 193467795543 195210748656 200633269452 218872657584 246231739782 257957060724 267511025936 281407702608 292816122984 300949904178 328308986376 343942747632 386935591086 401266538904 451424856267 492463479564 515914121448 585632245968 601899808356 656617972752 773871182172 802533077808 902849712534 984926959128 1031828242896 1203799616712 1354274568801 1547742364344 1805699425068 1969853918256 2407599233424 2708549137602 3095484728688 3611398850136 5417098275204 7222797700272 10834196550408 21668393100816
• Sum of all divisors σ(n): 80302898797440
• Sum of proper divisors (its aliquot sum) s(n): 58634505696624
• 21668393100816 is an abundant number, because the sum of its proper divisors (58634505696624) is greater than itself. Its abundance is 36966112595808

Bases of 21668393100816

• Binary: 100111011010100010000110111111010011000010000₂
• Hexadecimal: 0x13B510DFA610
• Base-36: 7OIBLSH00

Squares and roots of 21668393100816

• 21668393100816 squared (21668393100816²) is 469519259571490427539865856
• 21668393100816 cubed (21668393100816³) is 10173727884799119852631215477948524138496
• The square root of 21668393100816 is 4654932.1263382563
• The cube root of 21668393100816 is 27878.8957966839

Scales and comparisons

• 21,668,393,100,816 seconds is equal to 688,987 years, 45 weeks, 3 days, 19 hours, 33 minutes, 36 seconds.
• To count from 1 to 21,668,393,100,816 would take you about one million, seven hundred twenty-two thousand, four hundred sixty-nine 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 21668393100816 cubic inches would be around 2323.2 feet tall.

Recreational maths with 21668393100816

• 21668393100816 backwards is 61800139386612
• 21668393100816 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 21668393100816's digits is 54
• More coming soon!