21216065664730720

Names of 21216065664730720

• Cardinal: 21216065664730720 can be written as Twenty-one quadrillion, two hundred sixteen trillion, sixty-five billion, six hundred sixty-four million, seven hundred thirty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.121606566473072 × 10¹⁶

Factors of 21216065664730720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2595

Divisors of 21216065664730720

• Number of divisors d(n): 648
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 61 70 80 98 112 122 127 140 160 196 224 244 245 254 280 305 392 427 488 490 508 560 610 635 784 854 889 976 980 1016 1120 1220 1270 1568 1708 1778 1952 1960 2032 2135 2393 2440 2540 2989 3416 3556 3721 3920 4064 4270 4445 4786 4880 5080 5978 6223 6832 7112 7442 7747 7840 8540 8890 9572 9760 10160 11956 11965 12446 13664 14224 14884 14945 15494 16751 17080 17780 18605 19144 20320 23912 23930 24892 26047 28448 29768 29890 30988 31115 33502 34160 35560 37210 38288 38735 47824 47860 49784 52094 54229 59536 59780 61976 62230 67004 68320 71120 74420 76576 77470 83755 95648 95720 99568 104188 108458 117257 119072 119560 123952 124460 130235 134008 142240 145973 148840 154940 167510 182329 191440 199136 208376 216916 234514 239120 247904 248920 260470 268016 271145 291946 297680 303911 309880 335020 364658 379603 382880 416752 433832 469028 472567 478240 497840 520940 536032 542290 583892 586285 595360 607822 619760 670040 729316 729865 759206 833504 867664 911645 938056 945134 995680 1021811 1041880 1084580 1167784 1172570 1215644 1239520 1340080 1458632 1459730 1518412 1519555 1735328 1823290 1876112 1890268 1898015 2043622 2083760 2127377 2169160 2335568 2345140 2362835 2431288 2680160 2917264 2919460 3036824 3039110 3307969 3646580 3752224 3780536 3796030 4087244 4167520 4254754 4338320 4671136 4690280 4725670 4862576 5109055 5726449 5834528 5838920 6073648 6078220 6615938 7152677 7293160 7561072 7592060 8174488 8509508 8676640 8904353 9380560 9451340 9725152 10218110 10636885 11452898 11677840 12147296 12156440 13231876 14305354 14586320 14891639 15122144 15184120 16348976 16539845 17019016 17808706 18538571 18761120 18902680 20436220 21273770 22905796 23155783 23355680 24312880 26463752 28610708 28632245 29172640 29783278 30368240 32697952 33079690 34038032 35617412 35763385 37077142 37805360 40085143 40872440 42547540 44521765 45811592 46311566 48625760 52927504 57221416 57264490 59566556 60736480 62330471 66159380 68076064 71234824 71526770 74154284 74458195 75610720 80170286 81744880 85095080 89043530 91623184 92623132 92692855 105855008 114442832 114528980 115778915 119133112 124660942 129769997 132318760 142469648 143053540 148308568 148916390 160340572 163489760 170190160 178087060 183246368 185246264 185385710 200425715 228885664 229057960 231557830 238266224 249321884 259539994 264637520 280596001 284939296 286107080 296617136 297832780 311652355 320681144 340380320 349313389 356174120 370492528 370771420 400851430 436313297 458115920 463115660 476532448 498643768 519079988 529275040 561192002 572214160 593234272 595665560 623304710 641362288 648849985 698626778 712348240 727259023 740985056 741542840 801702860 872626594 908389979 916231840 926231320 997287536 1038159976 1122384004 1130852831 1144428320 1191331120 1246609420 1282724576 1297699970 1397253556 1402980005 1424696480 1454518046 1483085680 1603405720 1745253188 1746566945 1816779958 1852462640 1994575072 2076319952 2181566485 2244768008 2261705662 2382662240 2445193723 2493218840 2595399940 2794507112 2805960010 2909036092 2966171360 3206811440 3490506376 3493133890 3633559916 3636295115 3704925280 4152639904 4363132970 4489536016 4523411324 4541949895 4890387446 4986437680 5090813161 5190799880 5589014224 5611920020 5654264155 5818072184 6413622880 6981012752 6986267780 7267119832 7272590230 7915969817 8726265940 8979072032 9046822648 9083899790 9780774892 9972875360 10181626322 10381599760 11178028448 11223840040 11308528310 11636144368 12225968615 13962025504 13972535560 14534239664 14545180460 15831939634 17116356061 17452531880 18093645296 18167799580 19561549784 20363252644 20763199520 21308116729 22447680080 22617056620 23272288736 24451937230 25454065805 27945071120 29068479328 29090360920 31663879268 34232712122 34905063760 35635692127 36187290592 36335599160 39123099568 39579849085 40726505288 42616233458 44362800403 44895360160 45234113240 48903874460 50908131610 55411788719 55890142240 58180721840 63327758536 68465424244 69810127520 71271384254 72671198320 78246199136 79159698170 81453010576 85232466916 85581780305 88725600806 90468226480 97807748920 101816263220 106540583645 110823577438 116361443680 126655517072 136930848488 142542768508 145342396640 149156817103 158319396340 162906021152 170464933832 171163560610 177451201612 178178460635 180936452960 195615497840 203632526440 213081167290 221647154876 221814002015 253311034144 273861696976 277058943595 285085537016 298313634206 310539602821 316638792680 340929867664 342327121220 354902403224 356356921270 391230995680 407265052880 426162334580 443294309752 443628004030 547723393952 554117887190 570171074032 596627268412 621079205642 633277585360 681859735328 684654242440 709804806448 712713842540 745784085515 814530105760 852324669160 886588619504 887256008060 1044097719721 1108235774380 1140342148064 1193254536824 1242158411284 1266555170720 1369308484880 1419609612896 1425427685080 1491568171030 1552698014105 1704649338320 1773177239008 1774512016120 2088195439442 2173777219747 2216471548760 2386509073648 2484316822568 2706130824583 2738616969760 2850855370160 2983136342060 3105396028210 3409298676640 3549024032240 4176390878884 4347554439494 4432943097520 4773018147296 4968633645136 5220488598605 5412261649166 5701710740320 5966272684120 6210792056420 7098048064480 8352781757768 8695108878988 8865886195040 9937267290272 10440977197210 10824523298332 10868886098735 11932545368240 12421584112840 13530654122915 16705563515536 17390217757976 18942915772081 20881954394420 21649046596664 21737772197470 23865090736480 24843168225680 27061308245830 33411127031072 34780435515952 37885831544162 41763908788840 43298093193328 43475544394940 49686336451360 54122616491660 69560871031904 75771663088324 83527817577680 86596186386656 86951088789880 94714578860405 108245232983320 132600410404567 151543326176648 167055635155360 173902177579760 189429157720810 216490465966640 265200820809134 303086652353296 347804355159520 378858315441620 432980931933280 530401641618268 606173304706592 663002052022835 757716630883240 1060803283236536 1326004104045670 1515433261766480 2121606566473072 2652008208091340 3030866523532960 4243213132946144 5304016416182680 10608032832365360 21216065664730720
• Sum of all divisors σ(n): 59769536356438272
• Sum of proper divisors (its aliquot sum) s(n): 38553470691707552
• 21216065664730720 is an abundant number, because the sum of its proper divisors (38553470691707552) is greater than itself. Its abundance is 17337405026976832

Bases of 21216065664730720

• Binary: 1001011010111111110011000111001011110100100011001100000₂
• Hexadecimal: 0x4B5FE6397A4660
• Base-36: 5SWGU0I74V4

Squares and roots of 21216065664730720

• 21216065664730720 squared (21216065664730720²) is 450121442290165767900530111718400
• 21216065664730720 cubed (21216065664730720³) is 9549806076731456213532900200547105640252469248000
• The square root of 21216065664730720 is 145657357.0566578693
• The cube root of 21216065664730720 is 276835.3953677113

Scales and comparisons

• 21,216,065,664,730,720 seconds is equal to 674,605,262 years, 28 weeks, 18 minutes, 40 seconds.
• To count from 1 to 21,216,065,664,730,720 would take you about two billion, twenty-three million, eight hundred fifteen thousand, seven hundred eighty-seven 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 21216065664730720 cubic inches would be around 23069.6 feet tall.

Recreational maths with 21216065664730720

• 21216065664730720 backwards is 02703746656061212
• The number of decimal digits it has is: 17
• The sum of 21216065664730720's digits is 58
• More coming soon!