18213985664640

Names of 18213985664640

• Cardinal: 18213985664640 can be written as Eighteen trillion, two hundred thirteen billion, nine hundred eighty-five million, six hundred sixty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.821398566464 × 10¹³

Factors of 18213985664640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1124

Divisors of 18213985664640

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 53 60 64 72 80 90 96 106 120 128 144 159 160 180 192 212 240 265 288 318 320 360 384 424 477 480 530 576 636 640 720 795 848 954 960 1060 1061 1152 1272 1440 1590 1696 1908 1920 2120 2122 2385 2544 2809 2880 3180 3183 3392 3816 4240 4244 4770 5088 5305 5618 5760 6360 6366 6784 7632 8427 8480 8488 9540 9549 10176 10610 11236 12720 12732 14045 15264 15915 16854 16960 16976 19080 19098 20352 21220 22472 25281 25440 25464 28090 30528 31830 33708 33920 33952 38160 38196 42135 42440 44944 47745 50562 50880 50928 56180 56233 61056 63660 67416 67904 76320 76392 84270 84880 89888 95490 101124 101760 101856 112360 112466 126405 127320 134832 135808 152640 152784 168540 168699 169760 179776 190980 202248 203712 224720 224932 252810 254640 269664 281165 305280 305568 337080 337398 339520 359552 381960 404496 407424 449440 449864 505620 506097 509280 539328 562330 611136 674160 674796 679040 763920 808992 843495 898880 899728 1011240 1012194 1018560 1078656 1124660 1125721 1222272 1348320 1349592 1527840 1617984 1686990 1797760 1799456 2022480 2024388 2037120 2249320 2251442 2530485 2696640 2699184 2980349 3055680 3235968 3373980 3377163 3598912 4044960 4048776 4498640 4502884 5060970 5393280 5398368 5628605 5960698 6111360 6747960 6754326 7197824 8089920 8097552 8941047 8997280 9005768 10121940 10131489 10796736 11257210 11921396 13495920 13508652 14901745 16179840 16195104 16885815 17882094 17994560 18011536 20243880 20262978 21593472 22514420 23842792 26823141 26991840 27017304 29803490 32390208 33771630 35764188 35989120 36023072 40487760 40525956 44705235 45028840 47685584 50657445 53646282 53983680 54034608 59606980 59663213 64780416 67543260 71528376 72046144 80975520 81051912 89410470 90057680 95371168 101314890 107292564 107967360 108069216 119213960 119326426 134115705 135086520 143056752 144092288 161951040 162103824 178820940 178989639 180115360 190742336 202629780 214585128 216138432 238427920 238652852 268231410 270173040 286113504 298316065 323902080 324207648 357641880 357979278 360230720 381484672 405259560 429170256 432276864 476855840 477305704 536462820 536968917 540346080 572227008 596632130 648415296 715283760 715958556 720461440 810519120 858340512 894948195 953711680 954611408 1072925640 1073937834 1080692160 1144454016 1193264260 1296830592 1430567520 1431917112 1621038240 1716681024 1789896390 1907423360 1909222816 2145851280 2147875668 2161384320 2386528520 2684844585 2861135040 2863834224 3162150289 3242076480 3433362048 3579792780 3818445632 4291702560 4295751336 4773057040 5369689170 5722270080 5727668448 6324300578 6484152960 7159585560 7636891264 8583405120 8591502672 9486450867 9546114080 10739378340 11455336896 12648601156 14319171120 15810751445 17166810240 17183005344 18972901734 19092228160 21478756680 22910673792 25297202312 28459352601 28638342240 31621502890 34366010688 37945803468 38184456320 42957513360 47432254335 50594404624 56918705202 57276684480 63243005780 68732021376 75891606936 85915026720 94864508670 101188809248 113837410404 114553368960 126486011560 142296763005 151783213872 171830053440 189729017340 202377618496 227674820808 252972023120 284593526010 303566427744 343660106880 379458034680 404755236992 455349641616 505944046240 569187052020 607132855488 758916069360 910699283232 1011888092480 1138374104040 1214265710976 1517832138720 1821398566464 2023776184960 2276748208080 3035664277440 3642797132928 4553496416160 6071328554880 9106992832320 18213985664640
• Sum of all divisors σ(n): 64164736809810
• Sum of proper divisors (its aliquot sum) s(n): 45950751145170
• 18213985664640 is an abundant number, because the sum of its proper divisors (45950751145170) is greater than itself. Its abundance is 27736765480530

Bases of 18213985664640

• Binary: 100001001000011000110001001010011111010000000₂
• Hexadecimal: 0x1090C6253E80
• Base-36: 6GFE0SKG0

Squares and roots of 18213985664640

• 18213985664640 squared (18213985664640²) is 331749273791711422546329600
• 18213985664640 cubed (18213985664640³) is 6042476517096962307510589020648505344000
• The square root of 18213985664640 is 4267784.6319419633
• The cube root of 18213985664640 is 26310.8571579733

Scales and comparisons

• 18,213,985,664,640 seconds is equal to 579,148 years, 21 weeks, 6 hours, 24 minutes.
• To count from 1 to 18,213,985,664,640 would take you about one million, four hundred forty-seven thousand, eight hundred seventy-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 18213985664640 cubic inches would be around 2192.6 feet tall.

Recreational maths with 18213985664640

• 18213985664640 backwards is 04646658931281
• The number of decimal digits it has is: 14
• The sum of 18213985664640's digits is 63
• More coming soon!