21291284979238080

Names of 21291284979238080

• Cardinal: 21291284979238080 can be written as Twenty-one quadrillion, two hundred ninety-one trillion, two hundred eighty-four billion, nine hundred seventy-nine million, two hundred thirty-eight thousand and eighty.

Scientific notation

• Scientific notation: 2.129128497923808 × 10¹⁶

Factors of 21291284979238080

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 103245

Divisors of 21291284979238080

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 557 701 960 1114 1402 1671 2103 2228 2785 2804 3342 3505 4206 4456 5570 5608 6684 7010 8355 8412 8912 10515 11140 11216 13368 14020 16710 16824 17824 21030 22280 22432 26736 28040 33420 33648 35648 42060 44560 44864 53472 56080 66840 67296 84120 89120 101977 106944 112160 133680 134592 168240 178240 203954 224320 267360 305931 310249 336480 390457 407908 509885 534720 611862 620498 672960 780914 815816 930747 1019770 1171371 1223724 1240996 1529655 1551245 1561828 1631632 1861494 1952285 2039540 2342742 2447448 2481992 3059310 3102490 3123656 3263264 3722988 3904570 4079080 4653735 4685484 4894896 4963984 5856855 6118620 6204980 6247312 6526528 7445976 7809140 8158160 9307470 9370968 9789792 9927968 11713710 12237240 12409960 12494624 14891952 15618280 16316320 18614940 18741936 19579584 19855936 23427420 24474480 24819920 24989248 29783904 31236560 32632640 37229880 37483872 46854840 48948960 49639840 56801189 59567808 62473120 71485877 74459760 74967744 93709680 97897920 99279680 113602378 124946240 142971754 148919520 170403567 187419360 214457631 217484549 227204756 284005945 285943508 297839040 340807134 357429385 374838720 428915262 434969098 454409512 568011890 571887016 652453647 681614268 714858770 852017835 857830524 869938196 908819024 1072288155 1087422745 1136023780 1143774032 1304907294 1363228536 1429717540 1704035670 1715661048 1739876392 1817638048 2144576310 2174845490 2272047560 2287548064 2609814588 2726457072 2859435080 3262268235 3408071340 3431322096 3479752784 3635276096 4289152620 4349690980 4544095120 4575096128 5219629176 5452914144 5718870160 6524536470 6816142680 6862644192 6959505568 8578305240 8699381960 9088190240 10439258352 10905828288 11437740320 13049072940 13632285360 13725288384 13919011136 17156610480 17398763920 18176380480 20878516704 22875480640 26098145880 27264570720 31638262273 34313220960 34797527840 39817633489 41757033408 52196291760 54529141440 63276524546 68626441920 69595055680 79635266978 94914786819 104392583520 119452900467 126553049092 158191311365 159270533956 189829573638 199088167445 208785167040 238905800934 253106098184 316382622730 318541067912 379659147276 398176334890 474573934095 477811601868 506212196368 597264502335 632765245460 637082135824 759318294552 796352669780 949147868190 955623203736 1012424392736 1194529004670 1265530490920 1274164271648 1518636589104 1592705339560 1898295736380 1911246407472 2024848785472 2389058009340 2531060981840 2548328543296 3037273178208 3185410679120 3796591472760 3822492814944 4778116018680 5062121963680 6074546356416 6370821358240 7593182945520 7644985629888 9556232037360 10124243927360 12741642716480 15186365891040 19112464074720 22178421853373 30372731782080 38224928149440 44356843706746 66535265560119 88713687413492 110892109266865 133070531120238 177427374826984 221784218533730 266141062240476 332676327800595 354854749653968 443568437067460 532282124480952 665352655601190 709709499307936 887136874134920 1064564248961904 1330705311202380 1419418998615872 1774273748269840 2129128497923808 2661410622404760 3548547496539680 4258256995847616 5322821244809520 7097094993079360 10645642489619040 21291284979238080
• Sum of all divisors σ(n): 67818683741661216
• Sum of proper divisors (its aliquot sum) s(n): 46527398762423136
• 21291284979238080 is an abundant number, because the sum of its proper divisors (46527398762423136) is greater than itself. Its abundance is 25236113783185056

Bases of 21291284979238080

• Binary: 1001011101001000100111110010101111111111100010011000000₂
• Hexadecimal: 0x4BA44F95FFC4C0
• Base-36: 5TN4PAFY85C

Squares and roots of 21291284979238080

• 21291284979238080 squared (21291284979238080²) is 453318816067129088696657322086400
• 21291284979238080 cubed (21291284979238080³) is 9651740099336055565550360822685433435427930112000
• The square root of 21291284979238080 is 145915334.9694201265
• The cube root of 21291284979238080 is 277162.1730141189

Scales and comparisons

• 21,291,284,979,238,080 seconds is equal to 676,997,004 years, 3 weeks, 4 days, 22 hours, 8 minutes.
• To count from 1 to 21,291,284,979,238,080 would take you about two billion, thirty million, nine hundred ninety-one thousand and twelve 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 21291284979238080 cubic inches would be around 23096.8 feet tall.

Recreational maths with 21291284979238080

• 21291284979238080 backwards is 08083297948219212
• The number of decimal digits it has is: 17
• The sum of 21291284979238080's digits is 75
• More coming soon!