21000904394664960

Names of 21000904394664960

• Cardinal: 21000904394664960 can be written as Twenty-one quadrillion, nine hundred four billion, three hundred ninety-four million, six hundred sixty-four thousand, nine hundred sixty.

Scientific notation

• Scientific notation: 2.100090439466496 × 10¹⁶

Factors of 21000904394664960

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 15150

Divisors of 21000904394664960

• Number of divisors d(n): 1408
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 32 36 40 45 48 54 60 62 64 72 80 90 93 96 108 120 124 128 135 144 155 160 180 186 192 216 229 240 248 256 270 279 288 310 320 360 372 384 432 458 465 480 496 512 540 558 576 620 640 687 720 744 768 837 864 916 930 960 992 1024 1080 1116 1145 1152 1240 1280 1374 1395 1440 1488 1536 1613 1674 1728 1832 1860 1920 1984 2061 2160 2232 2290 2304 2480 2560 2748 2790 2880 2976 3072 3226 3348 3435 3456 3664 3720 3840 3968 4122 4185 4320 4464 4580 4608 4839 4960 5120 5496 5580 5760 5952 6183 6452 6696 6870 6912 7099 7328 7440 7680 7936 8065 8244 8370 8640 8928 9160 9216 9678 9920 10305 10992 11160 11520 11904 12366 12904 13267 13392 13740 13824 14198 14517 14656 14880 15360 15872 16130 16488 16740 17280 17856 18320 19356 19840 20610 21297 21984 22320 23040 23808 24195 24732 25808 26534 26784 27480 27648 28396 29034 29312 29760 30915 31744 32260 32976 33480 34560 35495 35712 36640 38712 39680 39801 41220 42594 43551 43968 44640 46080 47616 48390 49464 50003 51616 53068 53568 54960 56792 58068 58624 59520 61830 63891 64520 65952 66335 66960 69120 70990 71424 72585 73280 77424 79360 79602 82440 85188 87102 87936 89280 95232 96780 98928 100006 103232 106136 106485 107136 109920 113584 116136 117248 119040 119403 123660 127782 129040 131904 132670 133920 138240 141980 142848 145170 146560 150009 154848 158720 159204 164880 170376 174204 175872 178560 191673 193560 197856 199005 200012 206464 212272 212970 214272 217755 219840 227168 232272 234496 238080 238806 247320 250015 255564 258080 263808 265340 267840 283960 285696 290340 293120 300018 309696 318408 319455 329760 340752 348408 351744 357120 358209 369377 383346 387120 395712 398010 400024 411277 412928 424544 425940 428544 435510 439680 450027 454336 464544 476160 477612 494640 500030 511128 516160 527616 530680 535680 567920 580680 586240 597015 600036 619392 636816 638910 659520 681504 696816 703488 714240 716418 738754 750045 766692 774240 791424 796020 800048 822554 825856 849088 851880 857088 871020 879360 900054 908672 929088 955224 958365 989280 1000060 1022256 1032320 1055232 1061360 1071360 1108131 1135840 1161360 1172480 1194030 1200072 1233831 1238784 1273632 1277820 1319040 1350081 1363008 1393632 1428480 1432836 1477508 1500090 1533384 1548480 1582848 1592040 1600096 1645108 1651712 1698176 1703760 1742040 1758720 1791045 1800108 1817344 1846885 1858176 1910448 1916730 1978560 2000120 2044512 2056385 2064640 2110464 2122720 2142720 2216262 2250135 2271680 2322720 2388060 2400144 2467662 2477568 2547264 2555640 2638080 2700162 2726016 2787264 2865672 2955016 3000180 3038143 3066768 3096960 3165696 3184080 3200192 3290216 3324393 3396352 3407520 3484080 3517440 3582090 3600216 3634688 3693770 3701493 3716352 3820896 3833460 3957120 4000240 4089024 4112770 4129280 4245440 4285440 4432524 4500270 4543360 4645440 4776120 4800288 4935324 4955136 5094528 5111280 5276160 5400324 5452032 5540655 5574528 5731344 5910032 6000360 6076286 6133536 6169155 6193920 6331392 6368160 6400384 6580432 6648786 6750405 6792704 6815040 6968160 7164180 7200432 7269376 7387540 7402986 7432704 7641792 7666920 7914240 8000480 8178048 8225540 8258560 8490880 8865048 9000540 9086720 9114429 9290880 9552240 9600576 9870648 9973179 10189056 10222560 10552320 10800648 10904064 11081310 11104479 11149056 11450687 11462688 11820064 12000720 12152572 12267072 12338310 12387840 12736320 12800768 13160864 13297572 13500810 13585408 13630080 13936320 14328360 14400864 14775080 14805972 14865408 15190715 15283584 15333840 15828480 16000960 16356096 16451080 16621965 16981760 17730096 18001080 18173440 18228858 18507465 18581760 19104480 19201152 19741296 19946358 20378112 20445120 21399671 21601296 21808128 22162620 22208958 22298112 22901374 22925376 23640128 24001440 24305144 24534144 24676620 24775680 25472640 25601536 26321728 26595144 27001620 27260160 27343287 27872640 28656720 28801728 29550160 29611944 30381430 30567168 30667680 31656960 32001920 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618337098 631721472 638283456 641990130 656238888 663389801 684789472 687041220 691241472 709203840 710686656 729154320 732843968 753459464 768046080 770388156 777764608 789651840 797854320 820298610 824449464 847641897 851044608 855986840 864051840 874985184 888358320 916054960 917015040 941824330 945605120 947582208 962985195 972205760 981365760 1027184208 1030561830 1052869120 1063805760 1093731480 1099265952 1130189196 1134726144 1152069120 1155582234 1166646912 1184477760 1236674196 1263442944 1276566912 1283980260 1312477776 1326779602 1369578944 1374082440 1382482944 1412736495 1418407680 1421373312 1458308640 1465687936 1506918928 1540776312 1545842745 1555529216 1579303680 1595708640 1640597220 1648898928 1695283794 1702089216 1711973680 1728103680 1749970368 1776716640 1832109920 1834030080 1883648660 1891210240 1895164416 1925970390 1944411520 1990169403 2054368416 2061123660 2105738240 2127611520 2187462960 2198531904 2260378392 2304138240 2311164468 2333293824 2368955520 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9950847015 10171702764 10212535296 10271842080 10499822208 10614236816 10956631552 10992659520 11301891960 11370986496 11555822340 11666469120 11725503488 11941016418 12055351424 12326210496 12366741960 12714628455 12765669120 13124777760 13191191424 13267796020 13562270352 13695789440 13999762944 14213733120 14656879360 14701573977 15069189280 15407763120 15555292160 15921355224 16434947328 16488989280 16952837940 17020892160 17499703680 17588255232 17911524627 18083027136 18489315744 18951644160 19602098636 19786787136 19901694030 20343405528 20543684160 20999644416 21228473632 21913263104 21985319040 22603783920 23111644680 23332938240 23882032836 24110702848 24502623295 24652420992 24733483920 25429256910 25531338240 26249555520 26382382848 26535592040 27124540704 27391578880 27999525888 28427466240 29313758720 29403147954 29852541045 30138378560 30815526240 31842710448 32869894656 32977978560 33905675880 34999407360 35176510464 35823049254 36166054272 36978631488 39204197272 39573574272 39803388060 40686811056 41087368320 41999288832 42456947264 43970638080 44104721931 45207567840 46223289360 46665876480 47764065672 48221405696 49005246590 49304841984 49466967840 50858513820 51062676480 52499111040 52764765696 53071184080 54249081408 54783157760 56854932480 58627517440 58806295908 59705082090 60276757120 61631052480 63685420896 65739789312 65955957120 67811351760 69998814720 71646098508 72332108544 73507869885 73957262976 78408394544 79147148544 79606776120 81373622112 82174736640 83998577664 84913894528 87941276160 88209443862 89557623135 90415135680 92446578720 95528131344 96442811392 98010493180 98609683968 98933935680 101717027640 104998222080 105529531392 106142368160 108498162816 109566315520 117612591816 119410164180 120553514240 123262104960 127370841792 131911914240 132314165793 135622703520 139997629440 143292197016 144664217088 147015739770 147914525952 151916264429 156816789088 158294297088 159213552240 162747244224 164349473280 169827789056 175882552320 176418887724 179115246270 180830271360 184893157440 191056262688 196020986360 197219367936 197867871360 203434055280 209996444160 212284736320 216996325632 220523609655 235225183632 238820328360 241107028480 246524209920 254741683584 263823828480 264628331586 271245407040 286584394032 289328434176 294031479540 295829051904 303832528858 313633578176 316588594176 318427104480 325494488448 328698946560 339655578112 352837775448 358230492540 361660542720 369786314880 382112525376 392041972720 395735742720 406868110560 419992888320 424569472640 433992651264 441047219310 455748793287 470450367264 477640656720 482214056960 493048419840 509483367168 527647656960 529256663172 542490814080 573168788064 588062959080 591658103808 607665057716 627267156352 636854208960 650988976896 661570828965 679311156224 705675550896 716460985080 723321085440 739572629760 759581322145 764225050752 784083945440 791471485440 813736221120 849138945280 867985302528 882094438620 911497586574 940900734528 955281313440 986096839680 1018966734336 1058513326344 1084981628160 1146337576128 1176125918160 1215330115432 1254534312704 1273708417920 1301977953792 1323141657930 1367246379861 1411351101792 1432921970160 1446642170880 1479145259520 1519162644290 1528450101504 1568167890880 1582942970880 1627472442240 1698277890560 1764188877240 1822995173148 1881801469056 1910562626880 2037933468672 2117026652688 2169963256320 2278743966435 2292675152256 2352251836320 2430660230864 2509068625408 2547416835840 2603955907584 2646283315860 2734492759722 2822702203584 2865843940320 2958290519040 3038325288580 3056900203008 3136335781760 3254944884480 3396555781120 3528377754480 3645990346296 3763602938112 3821125253760 4101739139583 4234053305376 4339926512640 4557487932870 4585350304512 4704503672640 4861320461728 5018137250816 5094833671680 5292566631720 5468985519444 5645404407168 5731687880640 6076650577160 6113800406016 6272671563520 6509889768960 6836231899305 7056755508960 7291980692592 7527205876224 7642250507520 8203478279166 8468106610752 9114975865740 9170700609024 9409007345280 9722640923456 10189667343360 10585133263440 10937971038888 11290808814336 11463375761280 12153301154320 12545343127040 13019779537920 13672463798610 14113511017920 14583961385184 15054411752448 15284501015040 16406956558332 16936213221504 18229951731480 18341401218048 18818014690560 19445281846912 20508695697915 21170266526880 21875942077776 22581617628672 22926751522560 24306602308640 25090686254080 27344927597220 28227022035840 29167922770368 30569002030080 32813913116664 33872426443008 36459903462960 37636029381120 38890563693824 41017391395830 42340533053760 43751884155552 45163235257344 45853503045120 48613204617280 54689855194440 56454044071680 58335845540736 65627826233328 67744852886016 72919806925920 75272058762240 77781127387648 82034782791660 84681066107520 87503768311104 91707006090240 97226409234560 109379710388880 112908088143360 116671691081472 131255652466656 135489705772032 145839613851840 155562254775296 164069565583320 169362132215040 175007536622208 194452818469120 218759420777760 225816176286720 233343382162944 262511304933312 291679227703680 328139131166640 338724264430080 350015073244416 388905636938240 437518841555520 466686764325888 525022609866624 583358455407360 656278262333280 677448528860160 700030146488832 777811273876480 875037683111040 1050045219733248 1166716910814720 1312556524666560 1400060292977664 1750075366222080 2100090439466496 2333433821629440 2625113049333120 3500150732444160 4200180878932992 5250226098666240 7000301464888320 10500452197332480 21000904394664960
• Sum of all divisors σ(n): 77431182544281600
• Sum of proper divisors (its aliquot sum) s(n): 56430278149616640
• 21000904394664960 is an abundant number, because the sum of its proper divisors (56430278149616640) is greater than itself. Its abundance is 35429373754951680

Bases of 21000904394664960

• Binary: 1001010100111000011011000010110011001111110110000000000₂
• Hexadecimal: 0x4A9C361667EC00
• Base-36: 5QS76AHATC0

Squares and roots of 21000904394664960

• 21000904394664960 squared (21000904394664960²) is 441037985393858030008110651801600
• 21000904394664960 cubed (21000904394664960³) is 9262196565672053541777014678692618715252391936000
• The square root of 21000904394664960 is 144916887.8863500849
• The cube root of 21000904394664960 is 275896.3781468229

Scales and comparisons

• 21,000,904,394,664,960 seconds is equal to 667,763,799 years, 35 weeks, 5 days, 9 hours, 36 minutes.
• To count from 1 to 21,000,904,394,664,960 would take you about two billion, three million, two hundred ninety-one thousand, three hundred ninety-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 21000904394664960 cubic inches would be around 22991.4 feet tall.

Recreational maths with 21000904394664960

• 21000904394664960 backwards is 06946649340900012
• The number of decimal digits it has is: 17
• The sum of 21000904394664960's digits is 63
• More coming soon!