18211894543440

Names of 18211894543440

• Cardinal: 18211894543440 can be written as Eighteen trillion, two hundred eleven billion, eight hundred ninety-four million, five hundred forty-three thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.821189454344 × 10¹³

Factors of 18211894543440

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 103472

Divisors of 18211894543440

• Number of divisors d(n): 960
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 17 18 20 24 26 27 30 34 36 39 40 41 45 48 51 52 54 60 65 68 72 78 80 81 82 85 90 102 104 108 117 120 123 130 135 136 144 153 156 162 164 170 180 195 204 205 208 216 221 234 240 243 246 255 260 270 272 306 312 324 328 340 351 360 369 390 405 408 410 432 442 459 468 486 492 510 520 533 540 585 612 615 624 648 656 663 680 697 702 720 738 765 780 810 816 820 884 918 936 972 984 1020 1040 1053 1066 1080 1105 1107 1170 1215 1224 1230 1296 1326 1360 1377 1394 1404 1476 1530 1560 1599 1620 1640 1755 1768 1836 1845 1872 1944 1968 1989 2040 2091 2106 2132 2160 2210 2214 2295 2340 2430 2448 2460 2652 2665 2754 2788 2808 2952 3060 3120 3159 3198 3240 3280 3315 3321 3485 3510 3536 3672 3690 3888 3978 4080 4131 4182 4212 4264 4420 4428 4590 4680 4797 4860 4920 5265 5304 5330 5508 5535 5576 5616 5904 5967 6120 6273 6318 6396 6480 6630 6642 6885 6970 7020 7344 7380 7956 7995 8262 8364 8424 8528 8840 8856 9061 9180 9360 9594 9720 9840 9945 9963 10455 10530 10608 10660 11016 11070 11152 11934 12240 12546 12636 12792 13260 13284 13770 13940 14040 14391 14760 15795 15912 15990 16524 16605 16728 16848 17680 17712 17901 18122 18360 18819 19188 19440 19890 19926 20655 20910 21060 21320 22032 22140 23868 23985 25092 25272 25584 26520 26568 27183 27540 27880 28080 28782 29520 29835 31365 31590 31824 31980 33048 33210 33456 35802 36244 36720 37638 38376 39780 39852 41310 41820 42120 42640 43173 44280 45305 47736 47970 49815 50184 50544 53040 53136 53703 54366 55080 55760 56457 57564 59670 62730 63180 63960 66096 66420 71604 71955 72488 75276 76752 79560 79704 81549 82620 83640 84240 86346 88560 89505 90610 94095 95472 95940 99630 100368 103391 107406 108732 110160 112914 115128 119340 125460 126360 127920 129519 132840 135915 143208 143910 144976 150552 159120 159408 163098 165240 167280 169371 172692 179010 181220 188190 191880 199260 206782 214812 215865 217464 225828 230256 238680 244647 250920 252720 259038 265680 268515 271830 282285 286416 287820 301104 310173 326196 330480 338742 345384 358020 362440 376380 383760 398520 407745 413564 429624 431730 434928 451656 477360 489294 501840 516955 518076 537030 543660 564570 575640 620346 647595 652392 677484 690768 716040 724880 733941 752760 797040 815490 827128 846855 859248 863460 903312 930519 978588 1033910 1036152 1074060 1087320 1129140 1151280 1223235 1240692 1295190 1304784 1344083 1354968 1432080 1467882 1505520 1550865 1630980 1654256 1693710 1726920 1757647 1861038 1957176 2067820 2072304 2148120 2174640 2201823 2258280 2446470 2481384 2590380 2688166 2709936 2791557 2935764 3101730 3261960 3387420 3453840 3515294 3669705 3722076 3914352 4032249 4135640 4239031 4296240 4403646 4516560 4652595 4892940 4962768 5180760 5272941 5376332 5583114 5871528 6203460 6523920 6720415 6774840 7030588 7339410 7444152 8064498 8271280 8374671 8478062 8788235 8807292 9305190 9785880 10361520 10545882 10752664 11009115 11166228 11743056 12096747 12406920 12717093 13440830 13549680 13957785 14061176 14678820 14888304 15818823 16128996 16749342 16956124 17576470 17614584 18610380 19571760 20161245 21091764 21195155 21505328 22018230 22332456 22849411 24193494 24813840 25124013 25434186 26364705 26881660 27915570 28122352 29357640 31637646 32257992 33498684 33912248 35152940 35229168 36290241 37220760 38151279 40322490 41873355 42183528 42390310 44036460 44664912 45698822 47456469 48386988 50248026 50868372 52729410 53763320 55107403 55831140 58715280 60483735 63275292 63585465 64515984 66997368 67824496 68548233 70305880 72063527 72580482 74441520 76302558 79094115 80644980 83746710 84367056 84780620 88072920 91397644 94912938 96773976 100496052 101736744 105458820 107526640 108870723 110214806 111662280 114247055 114453837 120967470 125620065 126550584 127170930 133994736 137096466 140611760 142369407 144127054 145160964 152605116 158188230 161289960 165322209 167493420 169561240 176145840 181451205 182795288 189825876 190756395 193547952 200992104 203473488 205644699 210917640 216190581 217741446 220429612 223324560 228494110 228907674 237282345 241934940 251240130 253101168 254341860 274192932 275537015 284738814 288254108 290321928 305210232 316376460 322579920 326612169 330644418 334986840 339122480 342741165 343361511 360317635 362902410 365590576 379651752 381512790 401984208 411289398 421835280 427108221 432381162 435482892 440859224 456988220 457815348 474564690 483869880 495966627 502480260 508683720 544353615 548385864 551074030 569477628 572269185 576508216 580643856 610420464 616934097 632752920 648571743 653224338 661288836 669973680 685482330 686723022 711847035 720635270 725804820 759303504 763025580 822578796 826611045 854216442 864762324 870965784 881718448 913976440 915630696 936825851 949129380 967739760 991933254 1004960520 1017367440 1028223495 1030084533 1080952905 1088707230 1096771728 1102148060 1138955256 1144538370 1153016432 1233868194 1265505840 1297143486 1306448676 1322577672 1370964660 1373446044 1423694070 1441270540 1451609640 1487899881 1526051160 1633060845 1645157592 1653222090 1708432884 1716807555 1729524648 1741931568 1827952880 1831261392 1850802291 1873651702 1898258760 1945715229 1983866508 2009921040 2056446990 2060169066 2135541105 2161905810 2177414460 2204296120 2277910512 2289076740 2467736388 2479833135 2594286972 2612897352 2645155344 2741929320 2746892088 2810477553 2847388140 2882541080 2903219280 2975799762 3052102320 3084670485 3242858715 3266121690 3290315184 3306444180 3416865768 3433615110 3459049296 3701604582 3747303404 3796517520 3891430458 3967733016 4112893980 4120338132 4271082210 4323811620 4354828920 4408592240 4463699643 4578153480 4684129255 4935472776 4959666270 5150422665 5188573944 5225794704 5483858640 5493784176 5552406873 5620955106 5694776280 5765082160 5837145687 5951599524 6169340970 6485717430 6532243380 6612888360 6833731536 6867230220 7403209164 7439499405 7494606808 7782860916 7935466032 8225787960 8240676264 8431432659 8542164420 8647623240 8709657840 8927399286 9156306960 9254011455 9368258510 9728576145 9870945552 9919332540 10300845330 10377147888 11104813746 11241910212 11389552560 11674291374 11903199048 12338681940 12971434860 13064486760 13225776720 13391098929 13734460440 14052387765 14806418328 14878998810 14989213616 15565721832 16451575920 16481352528 16862865318 17084328840 17295246480 17511437061 17854798572 18508022910 18736517020 19457152290 19838665080 20601690660 22209627492 22318498215 22483820424 23348582748 23806398096 24677363880 25294297977 25942869720 26128973520 26782197858 27468920880 27762034365 28104775530 29185728435 29612836656 29757997620 31131443664 33725730636 34168657680 35022874122 35709597144 37016045820 37473034040 38914304580 39677330160 41203381320 42157163295 44419254984 44636996430 44967640848 46697165496 49354727760 50588595954 51885739440 53564395716 55524068730 56209551060 58371456870 59515995240 66955494645 67451461272 70045748244 71419194288 74032091640 74946068080 75882893931 77828609160 82406762640 84314326590 87557185305 88838509968 89273992860 93394330992 101177191908 107128791432 111048137460 112419102120 116742913740 119031990480 126471489885 133910989290 134902922544 140091496488 148064183280 151765787862 155657218320 168628653180 175114370610 178547985720 202354383816 214257582864 222096274920 224838204240 227648681793 233485827480 252942979770 267821978580 280182992976 303531575724 337257306360 350228741220 357095971440 379414469655 404708767632 444192549840 455297363586 466971654960 505885959540 535643957160 607063151448 674514612720 700457482440 758828939310 910594727172 1011771919080 1071287914320 1138243408965 1214126302896 1400914964880 1517657878620 1821189454344 2023543838160 2276486817930 3035315757240 3642378908688 4552973635860 6070631514480 9105947271720 18211894543440
• Sum of all divisors σ(n): 74088550029312
• Sum of proper divisors (its aliquot sum) s(n): 55876655485872
• 18211894543440 is an abundant number, because the sum of its proper divisors (55876655485872) is greater than itself. Its abundance is 37664760942432

Bases of 18211894543440

• Binary: 100001001000001001001100000010100010001010000₂
• Hexadecimal: 0x109049814450
• Base-36: 6GEFFSL00

Squares and roots of 18211894543440

• 18211894543440 squared (18211894543440²) is 331673102861379646047033600
• 18211894543440 cubed (18211894543440³) is 6040395572206973826554249785438339584000
• The square root of 18211894543440 is 4267539.6358370239
• The cube root of 18211894543440 is 26309.8502156909

Scales and comparisons

• 18,211,894,543,440 seconds is equal to 579,081 years, 47 weeks, 3 days, 11 hours, 24 minutes.
• To count from 1 to 18,211,894,543,440 would take you about one million, four hundred forty-seven thousand, seven hundred 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 18211894543440 cubic inches would be around 2192.5 feet tall.

Recreational maths with 18211894543440

• 18211894543440 backwards is 04434549811281
• 18211894543440 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 18211894543440's digits is 54
• More coming soon!