668399669841920

Names of 668399669841920

• Cardinal: 668399669841920 can be written as Six hundred sixty-eight trillion, three hundred ninety-nine billion, six hundred sixty-nine million, eight hundred forty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 6.6839966984192 × 10¹⁴

Factors of 668399669841920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 105217

Divisors of 668399669841920

• Number of divisors d(n): 624
• Complete list of divisors:
  1 2 4 5 8 10 16 17 19 20 31 32 34 38 40 62 64 68 76 80 85 95 124 128 136 152 155 160 170 190 248 256 272 304 310 320 323 340 380 496 512 527 544 589 608 620 640 646 680 760 961 992 1024 1054 1088 1178 1216 1240 1280 1292 1360 1520 1615 1922 1984 2048 2108 2176 2356 2432 2480 2560 2584 2635 2720 2945 3040 3230 3844 3968 4096 4216 4352 4712 4805 4864 4960 5120 5168 5270 5440 5890 6080 6460 7688 7936 8432 8704 9424 9610 9728 9920 10013 10240 10336 10540 10880 11780 12160 12920 15376 15872 16337 16864 17408 18259 18848 19220 19456 19840 20026 20480 20672 21080 21760 23560 24320 25840 30752 31744 32674 33728 34816 36518 37696 38440 38912 39680 40052 41344 42160 43520 47120 48640 50065 51680 61504 63488 65348 67456 69632 73036 75392 76880 77824 79360 80104 81685 82688 84320 87040 91295 94240 97280 100130 103360 105143 123008 126976 130696 134912 146072 150784 153760 158720 160208 163370 165376 168640 174080 182590 188480 194560 200260 206720 210286 246016 261392 269824 292144 301568 307520 310403 317440 320416 326740 330752 337280 348160 365180 376960 389120 400520 413440 420572 492032 522784 525715 539648 584288 603136 615040 620806 634880 640832 653480 661504 674560 730360 753920 801040 826880 841144 984064 1045568 1051430 1079296 1168576 1206272 1230080 1241612 1281664 1306960 1323008 1349120 1460720 1507840 1552015 1602080 1653760 1682288 1787431 1968128 1997717 2091136 2102860 2158592 2337152 2412544 2460160 2483224 2563328 2613920 2698240 2921440 3015680 3104030 3204160 3259433 3307520 3364576 3574862 3936256 3995434 4182272 4205720 4674304 4920320 4966448 5126656 5227840 5396480 5842880 6031360 6208060 6408320 6518866 6615040 6729152 7149724 7990868 8364544 8411440 8937155 9348608 9840640 9932896 9988585 10253312 10455680 10792960 11685760 12062720 12416120 12816640 13037732 13458304 14299448 15981736 16297165 16729088 16822880 17874310 18697216 19681280 19865792 19977170 20506624 20911360 23371520 24832240 25633280 26075464 26916608 28598896 31963472 32594330 33458176 33645760 33961189 35748620 37394432 39731584 39954340 41013248 41822720 46743040 49664480 51266560 52150928 53833216 55410361 57197792 61929227 63926944 65188660 66916352 67291520 67922378 71497240 74788864 79463168 79908680 83645440 93486080 99328960 101042423 102533120 104301856 107666432 110820722 114395584 123858454 127853888 130377320 134583040 135844756 142994480 158926336 159817360 167290880 169805945 186972160 198657920 202084846 205066240 208603712 215332864 221641444 228791168 247716908 255707776 260754640 269166080 271689512 277051805 285988960 309646135 317852672 319634720 334581760 339611890 373944320 397315840 404169692 417207424 430665728 443282888 457582336 495433816 505212115 511415552 521509280 538332160 543379024 554103610 571977920 619292270 635705344 639269440 679223780 794631680 808339384 834414848 886565776 915164672 990867632 1010424230 1022831104 1043018560 1052796859 1076664320 1086758048 1108207220 1143955840 1238584540 1271410688 1278538880 1358447560 1589263360 1616678768 1668829696 1717721191 1773131552 1830329344 1919806037 1981735264 2020848460 2045662208 2086037120 2105593718 2153328640 2173516096 2216414440 2287911680 2477169080 2557077760 2716895120 3178526720 3233357536 3337659392 3435442382 3546263104 3660658688 3839612074 3963470528 4041696920 4091324416 4172074240 4211187436 4347032192 4432828880 4575823360 4954338160 5114155520 5263984295 5433790240 6357053440 6466715072 6675318784 6870884764 7092526208 7321317376 7679224148 7926941056 8083393840 8182648832 8344148480 8422374872 8588605955 8694064384 8865657760 9151646720 9599030185 9908676320 10228311040 10527968590 10867580480 12933430144 13350637568 13741769528 14185052416 15358448296 15853882112 16166787680 16688296960 16844749744 17177211910 17388128768 17731315520 18303293440 19198060370 19817352640 20456622080 21055937180 21735160960 25866860288 27483539056 28370104832 30716896592 31707764224 32333575360 32636702629 33376593920 33689499488 34354423820 34776257536 35462631040 36606586880 38396120740 39634705280 40913244160 42111874360 43470321920 51733720576 54967078112 56740209664 61433793184 63415528448 64667150720 65273405258 66753187840 67378998976 68708847640 69552515072 70925262080 76792241480 79269410560 84223748720 86940643840 103467441152 109934156224 113480419328 122867586368 126831056896 129334301440 130546810516 134757997952 137417695280 139105030144 141850524160 153584482960 158538821120 163183513145 168447497440 173881287680 206934882304 219868312448 226960838656 245735172736 253662113792 258668602880 261093621032 269515995904 274835390560 283701048320 307168965920 317077642240 326367026290 336894994880 347762575360 413869764608 439736624896 491470345472 517337205760 522187242064 539031991808 549670781120 567402096640 614337931840 634155284480 652734052580 673789989760 695525150720 879473249792 982940690944 1034674411520 1044374484128 1078063983616 1099341562240 1134804193280 1228675863680 1268310568960 1305468105160 1347579979520 1758946499584 1965881381888 2069348823040 2088748968256 2156127967232 2198683124480 2457351727360 2610936210320 2695159959040 3517892999168 3931762763776 4177497936512 4312255934464 4397366248960 4914703454720 5221872420640 5390319918080 7035785998336 7863525527552 8354995873024 8794732497920 9829406909440 10443744841280 10780639836160 16709991746048 17589464995840 19658813818880 20887489682560 21561279672320 33419983492096 35178929991680 39317627637760 41774979365120 66839966984192 83549958730240 133679933968384 167099917460480 334199834920960 668399669841920
• Sum of all divisors σ(n): 1847244662939520
• Sum of proper divisors (its aliquot sum) s(n): 1178844993097600
• 668399669841920 is an abundant number, because the sum of its proper divisors (1178844993097600) is greater than itself. Its abundance is 510445323255680

Bases of 668399669841920

• Binary: 10010111111110011111101100111000111001000000000000₂
• Hexadecimal: 0x25FE7ECE39000
• Base-36: 6KXEKHUT4W

Squares and roots of 668399669841920

• 668399669841920 squared (668399669841920²) is 446758118644787660357789286400
• 668399669841920 cubed (668399669841920³) is 298612979001373396007850407609936157605888000
• The square root of 668399669841920 is 25853426.6557050421
• The cube root of 668399669841920 is 87433.6768635459

Scales and comparisons

• 668,399,669,841,920 seconds is equal to 21,253,042 years, 1 day, 20 hours, 5 minutes, 20 seconds.
• To count from 1 to 668,399,669,841,920 would take you about fifty-three million, one hundred thirty-two thousand, six hundred five 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 668399669841920 cubic inches would be around 7286.1 feet tall.

Recreational maths with 668399669841920

• 668399669841920 backwards is 029148966993866
• The number of decimal digits it has is: 15
• The sum of 668399669841920's digits is 86
• More coming soon!