21318785208967680

Names of 21318785208967680

• Cardinal: 21318785208967680 can be written as Twenty-one quadrillion, three hundred eighteen trillion, seven hundred eighty-five billion, two hundred eight million, nine hundred sixty-seven thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.131878520896768 × 10¹⁶

Factors of 21318785208967680

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 132184928148

Divisors of 21318785208967680

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 32 35 36 40 42 45 48 56 60 63 64 70 72 80 84 90 96 105 112 120 126 128 140 144 160 168 180 192 210 224 240 252 256 280 288 315 320 336 360 384 420 448 480 504 512 560 576 630 640 672 720 768 840 896 960 1008 1120 1152 1260 1280 1344 1440 1536 1680 1792 1920 2016 2240 2304 2520 2560 2688 2880 3360 3584 3840 4032 4480 4608 5040 5376 5760 6720 7680 8064 8960 10080 10752 11520 13440 16128 17920 20160 23040 26880 32256 40320 53760 80640 161280 132184928131 264369856262 396554784393 528739712524 660924640655 793109568786 925294496917 1057479425048 1189664353179 1321849281310 1586219137572 1850588993834 1982773921965 2114958850096 2379328706358 2643698562620 2775883490751 3172438275144 3701177987668 3965547843930 4229917700192 4626472484585 4758657412716 5287397125240 5551766981502 5948321765895 6344876550288 7402355975336 7931095687860 8327650472253 8459835400384 9252944969170 9517314825432 10574794250480 11103533963004 11896643531790 12689753100576 13879417453755 14804711950672 15862191375720 16655300944506 16919670800768 18505889938340 19034629650864 21149588500960 22207067926008 23793287063580 25379506201152 27758834907510 29609423901344 31724382751440 33310601889012 33839341601536 37011779876680 38069259301728 41638252361265 42299177001920 44414135852016 47586574127160 50759012402304 55517669815020 59218847802688 63448765502880 66621203778024 67678683203072 74023559753360 76138518603456 83276504722530 84598354003840 88828271704032 95173148254320 101518024804608 111035339630040 118437695605376 126897531005760 133242407556048 148047119506720 152277037206912 166553009445060 169196708007680 177656543408064 190346296508640 203036049609216 222070679260080 236875391210752 253795062011520 266484815112096 296094239013440 304554074413824 333106018890120 338393416015360 355313086816128 380692593017280 444141358520160 473750782421504 507590124023040 532969630224192 592188478026880 609108148827648 666212037780240 710626173632256 761385186034560 888282717040320 1015180248046080 1065939260448384 1184376956053760 1332424075560480 1421252347264512 1522770372069120 1776565434080640 2131878520896768 2368753912107520 2664848151120960 3045540744138240 3553130868161280 4263757041793536 5329696302241920 7106261736322560 10659392604483840 21318785208967680
• Sum of all divisors σ(n): 84380513242918464
• Sum of proper divisors (its aliquot sum) s(n): 63061728033950784
• 21318785208967680 is an abundant number, because the sum of its proper divisors (63061728033950784) is greater than itself. Its abundance is 41742942824983104

Bases of 21318785208967680

• Binary: 1001011101111010101001001111011011011000110001000000000₂
• Hexadecimal: 0x4BBD527B6C6200
• Base-36: 5TWVMPYP340

Squares and roots of 21318785208967680

• 21318785208967680 squared (21318785208967680²) is 454490602786099127405091284582400
• 21318785208967680 cubed (21318785208967680³) is 9689187540291095131849419905252346311403896832000
• The square root of 21318785208967680 is 146009538.0753178055
• The cube root of 21318785208967680 is 277281.4509911065

Scales and comparisons

• 21,318,785,208,967,680 seconds is equal to 677,871,426 years, 16 weeks, 1 day, 20 hours, 48 minutes.
• To count from 1 to 21,318,785,208,967,680 would take you about two billion, thirty-three million, six hundred fourteen thousand, two hundred seventy-eight 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 21318785208967680 cubic inches would be around 23106.8 feet tall.

Recreational maths with 21318785208967680

• 21318785208967680 backwards is 08676980258781312
• The number of decimal digits it has is: 17
• The sum of 21318785208967680's digits is 81
• More coming soon!