81213350400

Names of 81213350400

• Cardinal: 81213350400 can be written as Eighty-one billion, two hundred thirteen million, three hundred fifty thousand, four hundred.

Scientific notation

• Scientific notation: 8.12133504 × 10¹⁰

Factors of 81213350400

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 218

Divisors of 81213350400

• Number of divisors d(n): 1440
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 25 26 28 30 32 35 36 39 40 42 45 48 50 52 56 60 61 63 64 65 70 72 75 78 80 84 90 91 96 100 104 105 112 117 120 122 126 127 128 130 140 144 150 156 160 168 175 180 182 183 192 195 200 208 210 224 225 234 240 244 252 254 256 260 273 280 288 300 305 312 315 320 325 336 350 360 364 366 381 384 390 400 416 420 427 448 450 455 468 480 488 504 508 512 520 525 546 549 560 576 585 600 610 624 630 635 640 650 672 700 720 728 732 762 768 780 793 800 819 832 840 854 889 896 900 910 915 936 960 975 976 1008 1016 1040 1050 1092 1098 1120 1143 1152 1170 1200 1220 1248 1260 1270 1280 1281 1300 1344 1365 1400 1440 1456 1464 1524 1525 1536 1560 1575 1586 1600 1638 1651 1664 1680 1708 1778 1792 1800 1820 1830 1872 1905 1920 1950 1952 2016 2032 2080 2100 2135 2184 2196 2240 2275 2286 2304 2340 2379 2400 2440 2496 2520 2540 2560 2562 2600 2667 2688 2730 2745 2800 2880 2912 2925 2928 3048 3050 3120 3150 3172 3175 3200 3276 3302 3328 3360 3416 3556 3584 3600 3640 3660 3744 3810 3840 3843 3900 3904 3965 4032 4064 4095 4160 4200 4270 4368 4392 4445 4480 4550 4572 4575 4608 4680 4758 4800 4880 4953 4992 5040 5080 5124 5200 5334 5376 5460 5490 5551 5600 5715 5760 5824 5850 5856 6096 6100 6240 6300 6344 6350 6400 6405 6552 6604 6656 6720 6825 6832 7112 7137 7200 7280 7320 7488 7620 7680 7686 7747 7800 7808 7930 8001 8064 8128 8190 8255 8320 8400 8540 8736 8784 8890 8960 9100 9144 9150 9360 9516 9525 9600 9760 9906 9984 10080 10160 10248 10400 10668 10675 10752 10920 10980 11102 11200 11430 11520 11557 11648 11700 11712 11895 12192 12200 12480 12600 12688 12700 12800 12810 13104 13208 13335 13440 13650 13664 13725 14224 14274 14400 14560 14640 14859 14976 15240 15372 15494 15600 15616 15860 16002 16128 16256 16380 16510 16640 16653 16800 17080 17472 17568 17780 17920 18200 18288 18300 18720 19032 19050 19200 19215 19520 19812 19825 19968 20160 20320 20475 20496 20800 21336 21350 21840 21960 22204 22225 22400 22860 23040 23114 23241 23296 23400 23424 23790 24384 24400 24765 24960 25200 25376 25400 25620 26208 26416 26670 26880 27300 27328 27450 27755 28448 28548 28575 28800 29120 29280 29718 29952 30480 30744 30988 31200 31232 31720 32004 32025 32256 32512 32760 33020 33280 33306 33600 34160 34671 34944 35136 35560 35685 36400 36576 36600 37440 38064 38100 38400 38430 38735 39040 39624 39650 40005 40320 40640 40950 40992 41275 41600 42672 42700 43680 43920 44408 44450 44800 45720 46228 46482 46592 46800 46848 47580 48768 48800 49530 49920 49959 50400 50752 50800 51240 52416 52832 53340 53760 54229 54600 54656 54900 55510 56896 57096 57150 57600 57785 58240 58560 59436 59475 59904 60960 61488 61976 62400 63440 64008 64050 65024 65520 66040 66612 66675 67200 68320 69342 69723 69888 70272 71120 71370 72800 73152 73200 74295 74880 76128 76200 76860 77470 78080 79248 79300 80010 80640 81280 81900 81984 82550 83200 83265 85344 85400 87360 87840 88816 88900 89600 91440 92456 92964 93600 93696 95160 96075 97536 97600 99060 99840 99918 100711 100800 101504 101600 102480 104013 104832 105664 106680 108458 109200 109312 109800 111020 113792 114192 114300 115200 115570 116205 116480 117120 118872 118950 121920 122976 123825 123952 124800 126880 128016 128100 131040 132080 133224 133350 134400 136640 138684 138775 139446 139776 140544 142240 142740 145600 146304 146400 148590 149760 152256 152400 153720 154940 156160 158496 158600 160020 161280 162560 162687 163800 163968 165100 166400 166530 170688 170800 173355 174720 175680 177632 177800 178425 182880 184912 185928 187200 190320 192150 193675 195072 195200 198120 199836 200025 201422 201600 203008 203200 204960 208026 209664 211328 213360 216916 218400 218624 219600 222040 227584 228384 228600 231140 232410 232960 234240 237744 237900 243840 245952 247650 247904 249600 249795 253760 256032 256200 262080 264160 266448 266700 268800 271145 273280 277368 277550 278892 281088 284480 285480 288925 291200 292608 292800 297180 299520 302133 304512 304800 307440 309880 316992 317200 320040 325120 325374 327600 327936 330200 333060 341376 341600 346710 348615 349440 351360 355264 355600 356850 365760 369824 371475 371856 374400 380640 384300 387350 390400 396240 399672 400050 402844 403200 406016 406400 409920 416052 416325 419328 422656 426720 433832 436800 439200 444080 455168 456768 457200 462280 464820 468480 475488 475800 487680 488061 491904 495300 495808 499200 499590 503555 507520 512064 512400 520065 524160 528320 532896 533400 542290 546560 554736 555100 557784 568960 570960 577850 581025 582400 585216 585600 594360 604266 609024 609600 614880 619760 633984 634400 640080 650748 655200 655872 660400 666120 682752 683200 693420 697230 698880 702720 704977 710528 711200 713700 731520 739648 742950 743712 748800 761280 768600 774700 780800 792480 799344 800100 805688 806400 812800 813435 819840 832104 832650 845312 853440 866775 867664 873600 878400 888160 906399 913536 914400 924560 929640 950976 951600 975360 976122 983808 990600 991616 999180 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9991800 10071100 10150400 10241280 10401300 10411968 10483200 10566400 10574655 10657920 10845800 11094720 11155680 11279632 11379200 11419200 11887200 11899392 12085320 12201525 12297600 12395200 12679680 12689586 12789504 12801600 12891008 13014960 13313664 13322400 13868400 13882624 13944600 14099540 14210560 14502384 14630400 14792960 14874240 15106650 15225600 15617952 15849600 15986880 16113760 16268700 16396800 16642080 16919448 17068800 17353280 17624425 17751552 17763200 17849088 18127980 18270720 18491200 18592800 19019520 19336512 19522440 19832320 19983600 20142200 20482560 20802600 20823936 21132800 21149310 21315840 21691600 22189440 22311360 22559264 22659975 22838400 23774400 24170640 24403050 24595200 24790400 25379172 25579008 25603200 25782016 26029920 26627328 26644800 27736800 27765248 27889200 28199080 29004768 29585920 29748480 30213300 30451200 31235904 31699200 31723965 31973760 32227520 32537400 33284160 33838896 34137600 34706560 35248850 35526400 35698176 36255960 36982400 37185600 38039040 38673024 39044880 39967200 40284400 41605200 41647872 42298620 42631680 43383200 44378880 44622720 45118528 45319950 45676800 47548800 48341280 48806100 49190400 49580800 50758344 51206400 51564032 52059840 52873275 53254656 53289600 55473600 55778400 56398160 58009536 59496960 60426600 62471808 63398400 63447930 63947520 64455040 65074800 66568320 67677792 69413120 70497700 71052800 72511920 73964800 74371200 77346048 78089760 79934400 80568800 83210400 83295744 84597240 86766400 88757760 89245440 90237056 90639900 91353600 95097600 96682560 97612200 99161600 101516688 102412800 104119680 105746550 106579200 110947200 111556800 112796320 116019072 120853200 124943616 126895860 127895040 128910080 130149600 133136640 135355584 138826240 140995400 145023840 147929600 148742400 154692096 156179520 158619825 159868800 161137600 166420800 169194480 173532800 178490880 180474112 181279800 190195200 193365120 195224400 203033376 208239360 211493100 213158400 221894400 223113600 225592640 232038144 241706400 249887232 253791720 257820160 260299200 266273280 270711168 281990800 290047680 297484800 312359040 317239650 319737600 322275200 332841600 338388960 347065600 360948224 362559600 386730240 390448800 406066752 416478720 422986200 443788800 446227200 451185280 464076288 483412800 507583440 520598400 541422336 563981600 580095360 624718080 634479300 639475200 644550400 665683200 676777920 694131200 725119200 773460480 780897600 812133504 845972400 892454400 902370560 966825600 1015166880 1041196800 1082844672 1127963200 1160190720 1249436160 1268958600 1289100800 1331366400 1353555840 1450238400 1561795200 1624267008 1691944800 1804741120 1933651200 2030333760 2082393600 2255926400 2320381440 2537917200 2707111680 2900476800 3123590400 3248534016 3383889600 3867302400 4060667520 4511852800 5075834400 5414223360 5800953600 6247180800 6767779200 8121335040 9023705600 10151668800 11601907200 13535558400 16242670080 20303337600 27071116800 40606675200 81213350400
• Sum of all divisors σ(n): 366437879808
• Sum of proper divisors (its aliquot sum) s(n): 285224529408
• 81213350400 is an abundant number, because the sum of its proper divisors (285224529408) is greater than itself. Its abundance is 204011179008

Bases of 81213350400

• Binary: 1001011101000101100010110001000000000₂
• Hexadecimal: 0x12E8B16200
• Base-36: 11B4BY80

Squares and roots of 81213350400

• 81213350400 squared (81213350400²) is 6595608283193180160000
• 81213350400 cubed (81213350400³) is 535651446604110171224408064000000
• The square root of 81213350400 is 284979.5613723903
• The cube root of 81213350400 is 4330.5442017537

Scales and comparisons

• 81,213,350,400 seconds is equal to 2,582 years, 17 weeks, 2 days, 8 hours.
• To count from 1 to 81,213,350,400 would take you about five thousand, one hundred sixty-four 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 81213350400 cubic inches would be around 360.9 feet tall.

Recreational maths with 81213350400

• 81213350400 backwards is 00405331218
• The number of decimal digits it has is: 11
• The sum of 81213350400's digits is 27
• More coming soon!