21008644643304432

Names of 21008644643304432

• Cardinal: 21008644643304432 can be written as Twenty-one quadrillion, eight trillion, six hundred forty-four billion, six hundred forty-three million, three hundred four thousand, four hundred thirty-two.

Scientific notation

• Scientific notation: 2.1008644643304432 × 10¹⁶

Factors of 21008644643304432

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 19
• Sum of prime factors: 28

Divisors of 21008644643304432

• Number of divisors d(n): 350
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 23 24 27 36 46 48 54 69 72 81 92 108 138 144 162 184 207 216 243 276 324 368 414 432 486 529 552 621 648 729 828 972 1058 1104 1242 1296 1458 1587 1656 1863 1944 2116 2484 2916 3174 3312 3726 3888 4232 4761 4968 5589 5832 6348 7452 8464 9522 9936 11178 11664 12167 12696 14283 14904 16767 19044 22356 24334 25392 28566 29808 33534 36501 38088 42849 44712 48668 57132 67068 73002 76176 85698 89424 97336 109503 114264 128547 134136 146004 171396 194672 219006 228528 257094 268272 279841 292008 328509 342792 385641 438012 514188 559682 584016 657018 685584 771282 839523 876024 985527 1028376 1119364 1314036 1542564 1679046 1752048 1971054 2056752 2238728 2518569 2628072 2956581 3085128 3358092 3942108 4477456 5037138 5256144 5913162 6170256 6436343 6716184 7555707 7884216 8869743 10074276 11826324 12872686 13432368 15111414 15768432 17739486 19309029 20148552 22667121 23652648 25745372 30222828 35478972 38618058 40297104 45334242 47305296 51490744 57927087 60445656 68001363 70957944 77236116 90668484 102981488 115854174 120891312 136002726 141915888 148035889 154472232 173781261 181336968 204004089 231708348 272005452 296071778 308944464 347562522 362673936 408008178 444107667 463416696 521343783 544010904 592143556 695125044 816016356 888215334 926833392 1042687566 1088021808 1184287112 1332323001 1390250088 1564031349 1632032712 1776430668 2085375132 2368574224 2664646002 2780500176 3128062698 3264065424 3404825447 3552861336 3996969003 4170750264 4692094047 5329292004 6256125396 6809650894 7105722672 7993938006 8341500528 9384188094 10214476341 10658584008 11990907009 12512250792 13619301788 15987876012 18768376188 20428952682 21317168016 23981814018 25024501584 27238603576 30643429023 31975752024 35972721027 37536752376 40857905364 47963628036 54477207152 61286858046 63951504048 71945442054 75073504752 78310985281 81715810728 91930287069 95927256072 107918163081 122573716092 143890884108 156621970562 163431621456 183860574138 191854512144 215836326162 234932955843 245147432184 275790861207 287781768216 313243941124 367721148276 431672652324 469865911686 490294864368 551581722414 575563536432 626487882248 704798867529 735442296552 827372583621 863345304648 939731823372 1103163444828 1252975764496 1409597735058 1470884593104 1654745167242 1726690609296 1801152661463 1879463646744 2114396602587 2206326889656 2482117750863 2819195470116 3309490334484 3602305322926 3758927293488 4228793205174 4412653779312 4964235501726 5403457984389 5638390940232 6343189807761 6618980668968 7204610645852 8457586410348 9928471003452 10806915968778 11276781880464 12686379615522 13237961337936 14409221291704 16210373953167 16915172820696 19029569423283 19856942006904 21613831937556 25372759231044 28818442583408 32420747906334 33830345641392 38059138846566 39713884013808 43227663875112 48631121859501 50745518462088 57088708269849 64841495812668 76118277693132 86455327750224 97262243719002 101491036924176 114177416539698 129682991625336 145893365578503 152236555386264 194524487438004 228354833079396 259365983250672 291786731157006 304473110772528 389048974876008 437680096735509 456709666158792 583573462314012 778097949752016 875360193471018 913419332317584 1167146924628024 1313040290206527 1750720386942036 2334293849256048 2626080580413054 3501440773884072 5252161160826108 7002881547768144 10504322321652216 21008644643304432
• Sum of all divisors σ(n): 63802476338728872
• Sum of proper divisors (its aliquot sum) s(n): 42793831695424440
• 21008644643304432 is an abundant number, because the sum of its proper divisors (42793831695424440) is greater than itself. Its abundance is 21785187052120008

Bases of 21008644643304432

• Binary: 1001010101000110100000001000001001011010011001111110000₂
• Hexadecimal: 0x4AA340412D33F0
• Base-36: 5QUXY41HR00

Squares and roots of 21008644643304432

• 21008644643304432 squared (21008644643304432²) is 441363149748644004861008230842624
• 21008644643304432 cubed (21008644643304432³) is 9272441571718821735641565720158646531395113709568
• The square root of 21008644643304432 is 144943591.2460583129
• The cube root of 21008644643304432 is 275930.2694532765

Scales and comparisons

• 21,008,644,643,304,432 seconds is equal to 668,009,915 years, 33 weeks, 6 days, 12 hours, 7 minutes, 12 seconds.
• To count from 1 to 21,008,644,643,304,432 would take you about two billion, four million, twenty-nine thousand, seven hundred forty-six 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 21008644643304432 cubic inches would be around 22994.2 feet tall.

Recreational maths with 21008644643304432

• 21008644643304432 backwards is 23440334644680012
• 21008644643304432 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21008644643304432's digits is 54
• More coming soon!