18681427944944640

Names of 18681427944944640

• Cardinal: 18681427944944640 can be written as Eighteen quadrillion, six hundred eighty-one trillion, four hundred twenty-seven billion, nine hundred forty-four million, nine hundred forty-four thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.868142794494464 × 10¹⁶

Factors of 18681427944944640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 5229186

Divisors of 18681427944944640

• Number of divisors d(n): 1056
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 31 32 36 40 41 45 48 60 61 62 64 72 80 82 90 93 96 120 122 123 124 128 144 155 160 164 180 183 186 192 205 240 244 246 248 256 279 288 305 310 320 328 360 366 369 372 384 410 465 480 488 492 496 512 549 558 576 610 615 620 640 656 720 732 738 744 768 820 915 930 960 976 984 992 1024 1098 1116 1152 1220 1230 1240 1271 1280 1312 1395 1440 1464 1476 1488 1536 1640 1830 1845 1860 1891 1920 1952 1968 1984 2196 2232 2304 2440 2460 2480 2501 2542 2560 2624 2745 2790 2880 2928 2952 2976 3072 3280 3660 3690 3720 3782 3813 3840 3904 3936 3968 4392 4464 4608 4880 4920 4960 5002 5084 5120 5248 5490 5580 5673 5760 5856 5904 5952 6355 6560 7320 7380 7440 7503 7564 7626 7680 7808 7872 7936 8784 8928 9216 9455 9760 9840 9920 10004 10168 10496 10980 11160 11346 11439 11520 11712 11808 11904 12505 12710 13120 14640 14760 14880 15006 15128 15252 15360 15616 15744 15872 17019 17568 17856 18910 19065 19520 19680 19840 20008 20336 20992 21960 22320 22509 22692 22878 23040 23424 23616 23808 25010 25420 26240 28365 29280 29520 29760 30012 30256 30504 31232 31488 31744 34038 35136 35712 37515 37820 38130 39040 39360 39680 40016 40672 41984 43920 44640 45018 45384 45756 46080 46848 47232 47616 50020 50840 52480 56730 57195 58560 59040 59520 60024 60512 61008 62464 62976 68076 70272 71424 75030 75640 76260 77531 78080 78720 79360 80032 81344 85095 87840 89280 90036 90768 91512 93696 94464 95232 100040 101680 104960 112545 113460 114390 117120 118080 119040 120048 121024 122016 125952 136152 140544 142848 150060 151280 152520 155062 156160 157440 158720 160064 162688 170190 175680 178560 180072 181536 183024 187392 188928 200080 203360 209920 225090 226920 228780 232593 234240 236160 238080 240096 242048 244032 272304 281088 285696 300120 302560 305040 310124 312320 314880 320128 325376 340380 351360 357120 360144 363072 366048 377856 387655 400160 406720 450180 453840 457560 465186 468480 472320 476160 480192 484096 488064 544608 562176 600240 605120 610080 620248 629760 640256 650752 680760 697779 702720 714240 720288 726144 732096 775310 800320 813440 900360 907680 915120 930372 936960 944640 960384 968192 976128 1089216 1162965 1200480 1210240 1220160 1240496 1280512 1301504 1361520 1395558 1405440 1428480 1440576 1452288 1464192 1550620 1600640 1626880 1800720 1815360 1830240 1860744 1889280 1920768 1936384 1952256 2178432 2325930 2400960 2420480 2440320 2480992 2561024 2723040 2791116 2810880 2881152 2904576 2928384 3101240 3201280 3253760 3488895 3601440 3630720 3660480 3721488 3841536 3904512 4356864 4651860 4801920 4840960 4880640 4961984 5229043 5446080 5582232 5762304 5809152 5856768 6202480 6402560 6507520 6977790 7202880 7261440 7320960 7442976 7683072 8713728 9303720 9603840 9681920 9761280 9923968 10458086 10892160 11164464 11524608 11713536 12404960 12805120 13955580 14405760 14522880 14641920 14885952 15687129 17427456 18607440 19207680 19522560 19847936 20916172 21784320 22328928 23049216 24809920 26145215 27911160 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4253512737920 4708021155480 4746297750240 4785201830160 4864955193996 4899404129280 4939563179520 5021889232512 5062717600256 5104215285504 5695557300288 6081193992495 6277361540640 6328397000320 6380269106880 6486606925328 6695852310016 6805620380672 7119446625360 7297432790994 7349106193920 7469583344640 7532833848768 7594076400384 7656322928256 8108258656660 8369815387520 8507025475840 9416042310960 9492595500480 9570403660320 9729910387992 9879126359040 10043778465024 10125435200512 10208430571008 11391114600576 12162387984990 12554723081280 12656794000640 12760538213760 12973213850656 13391704620032 14238893250720 14594865581988 14698212387840 15065667697536 15188152800768 15312645856512 16216517313320 16739630775040 17014050951680 18243581977485 18832084621920 18985191000960 19140807320640 19459820775984 20087556930048 20416861142016 22782229201152 24324775969980 25109446162560 25313588001280 25521076427520 25946427701312 28477786501440 29189731163976 30131335395072 30376305601536 30625291713024 32433034626640 33479261550080 34028101903360 36487163954970 37664169243840 37970382001920 38281614641280 38919641551968 40175113860096 45564458402304 48649551939960 50218892325120 50627176002560 51042152855040 51892855402624 56955573002880 58379462327952 60262670790144 61250583426048 64866069253280 66958523100160 72974327909940 75328338487680 75940764003840 76563229282560 77839283103936 91128916804608 97299103879920 100437784650240 102084305710080 103785710805248 113911146005760 116758924655904 120525341580288 129732138506560 145948655819880 150656676975360 151881528007680 153126458565120 155678566207872 194598207759840 200875569300480 207571421610496 227822292011520 233517849311808 259464277013120 291897311639760 301313353950720 306252917130240 311357132415744 389196415519680 415142843220992 455644584023040 467035698623616 518928554026240 583794623279520 602626707901440 622714264831488 778392831039360 934071397247232 1037857108052480 1167589246559040 1245428529662976 1556785662078720 1868142794494464 2075714216104960 2335178493118080 3113571324157440 3736285588988928 4670356986236160 6227142648314880 9340713972472320 18681427944944640
• Sum of all divisors σ(n): 69570592139123712
• Sum of proper divisors (its aliquot sum) s(n): 50889164194179072
• 18681427944944640 is an abundant number, because the sum of its proper divisors (50889164194179072) is greater than itself. Its abundance is 32207736249234432

Bases of 18681427944944640

• Binary: 1000010010111101010100011100100100011100011010000000000₂
• Hexadecimal: 0x425EA8E48E3400
• Base-36: 53Y0HIQ8SG0

Squares and roots of 18681427944944640

• 18681427944944640 squared (18681427944944640²) is 348995750062158515322932664729600
• 18681427944944640 cubed (18681427944944640³) is 6519738957878123170450103886824587756352569344000
• The square root of 18681427944944640 is 136680020.2844023579
• The cube root of 18681427944944640 is 265340.3858776923

Scales and comparisons

• 18,681,427,944,944,640 seconds is equal to 594,011,623 years, 10 weeks, 2 days, 6 hours, 24 minutes.
• To count from 1 to 18,681,427,944,944,640 would take you about one billion, seven hundred eighty-two million, thirty-four thousand, eight 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 18681427944944640 cubic inches would be around 22111.7 feet tall.

Recreational maths with 18681427944944640

• 18681427944944640 backwards is 04644944972418681
• The number of decimal digits it has is: 17
• The sum of 18681427944944640's digits is 81
• More coming soon!