21000621745493440

Names of 21000621745493440

• Cardinal: 21000621745493440 can be written as Twenty-one quadrillion, six hundred twenty-one billion, seven hundred forty-five million, four hundred ninety-three thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.100062174549344 × 10¹⁶

Factors of 21000621745493440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 224

Divisors of 21000621745493440

• Number of divisors d(n): 672
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 38 40 61 64 76 80 95 122 137 152 160 190 244 274 304 305 320 361 380 488 548 608 610 685 722 760 976 1096 1159 1216 1220 1370 1444 1520 1805 1952 2192 2318 2440 2603 2740 2888 3040 3610 3721 3904 4384 4636 4880 5206 5480 5776 5795 6080 6859 7220 7442 8357 8768 9272 9760 10412 10960 11552 11590 13015 13718 14440 14884 16714 18544 18605 18769 19520 20824 21920 22021 23104 23180 26030 27436 28880 29768 33428 34295 37088 37210 37538 41648 41785 43840 44042 46360 49457 52060 54872 57760 59536 66856 68590 70699 74176 74420 75076 83296 83570 88084 92720 93845 98914 104120 109744 110105 115520 119072 133712 137180 141398 148840 150152 158783 166592 167140 176168 185440 187690 197828 208240 219488 220210 238144 247285 267424 274360 282796 297680 300304 317566 334280 352336 353495 356611 370880 375380 395656 416480 418399 438976 440420 494570 509777 534848 548720 565592 595360 600608 635132 668560 704672 706990 713222 750760 791312 793915 832960 836798 880840 939683 989140 1019554 1097440 1131184 1144909 1190720 1201216 1270264 1337120 1343281 1409344 1413980 1426444 1501520 1582624 1587830 1673596 1761680 1783055 1879366 1978280 2039108 2091995 2194880 2262368 2289818 2540528 2548885 2571353 2674240 2686562 2827960 2852888 3003040 3016877 3165248 3175660 3347192 3523360 3566110 3758732 3956560 4078216 4183990 4524736 4579636 4698415 5081056 5097770 5142706 5373124 5655920 5705776 5724545 6006080 6033754 6351320 6694384 6716405 6775609 7046720 7132220 7517464 7913120 8156432 8367980 9159272 9396830 9685763 10162112 10195540 10285412 10746248 11311840 11411552 11449090 12067508 12702640 12856765 13388768 13432810 13551218 14264440 15034928 15084385 15826240 16312864 16735960 18318544 18793660 19371526 20391080 20570824 21492496 21753271 22623680 22823104 22898180 24135016 25405280 25522339 25713530 26777536 26865620 27102436 28528880 30069856 30168770 32625728 33471920 33878045 36637088 37587320 38743052 40782160 41141648 42984992 43506542 45796360 48270032 48428815 48855707 50810560 51044678 51427060 53731240 54204872 57057760 57320663 60139712 60337540 66943840 67756090 69839449 73274176 75174640 77486104 81564320 82283296 85969984 87013084 91592720 96540064 96857630 97711414 102089356 102854120 107462480 108409744 108766355 114115520 114641326 120675080 127611695 128736571 133887680 135512180 139678898 150349280 154972208 156852533 163128640 164566592 174026168 183185440 184029497 193080128 193715260 195422828 204178712 205708240 214924960 216819488 217532710 229282652 241350160 244278535 255223390 257473142 271024360 279357796 286603315 300698560 309944416 313705066 348052336 349197245 366370880 368058994 387430520 390845656 408357424 411416480 413312149 429849920 433638976 435065420 458565304 482700320 488557070 510446780 514946284 542048720 558715592 573206630 619888832 627410132 643682855 696104672 698394490 736117988 774861040 781691312 784262665 816714848 822832960 826624298 870130840 917130608 920147485 928258433 965400640 977114140 1020893560 1029892568 1084097440 1117431184 1146413260 1254820264 1287365710 1326949531 1392209344 1396788980 1472235976 1549722080 1563382624 1568525330 1633429696 1653248596 1740261680 1834261216 1840294970 1856516866 1954228280 2041787120 2059785136 2066560745 2168194880 2234862368 2292826520 2509640528 2574731420 2653899062 2793577960 2944471952 2980198127 3099444160 3126765248 3137050660 3306497192 3480523360 3496560443 3668522432 3680589940 3713033732 3908456560 4083574240 4119570272 4133121490 4469724736 4585653040 4641292165 5019281056 5149462840 5307798124 5587155920 5888943904 5960396254 6274101320 6612994384 6634747655 6961046720 6993120886 7361179880 7426067464 7816913120 7852930831 8167148480 8239140544 8266242980 9171306080 9282584330 9568004513 10038562112 10298925680 10615596248 11174311840 11777887808 11920792508 12548202640 13225988768 13269495310 13986241772 14722359760 14852134928 14900990635 15633826240 15705861662 16532485960 17482802215 17636910227 18342612160 18565168660 19136009026 20597851360 21231192496 22348623680 23841585016 25096405280 25212041089 26451977536 26538990620 27972483544 29444719520 29704269856 29801981270 31411723324 33064971920 34965604430 35273820454 37130337320 38272018052 39264654155 41195702720 42462384992 47683170032 47840022565 50192810560 50424082178 53077981240 55944967088 56623764413 58889439040 59408539712 59603962540 62823446648 66129943840 69931208860 70547640908 74260674640 76544036104 78529308310 84924769984 88184551135 95366340064 95680045130 100848164356 106155962480 111889934176 113247528826 119207925080 125646893296 126060205445 132259887680 139862417720 141095281816 148521349280 153088072208 157058616620 176369102270 181792085747 190732680128 191360090260 201696328712 212311924960 223779868352 226495057652 238415850160 251293786592 252120410890 279724835440 282190563632 283118822065 297042698560 306176144416 314117233240 352738204540 363584171494 382720180520 403392657424 424623849920 452990115304 476831700320 479028780691 502587573184 504240821780 559449670880 564381127264 566237644130 612352288832 628234466480 705476409080 727168342988 765440361040 806785314848 905980230608 908960428735 953663400640 958057561382 1008481643560 1075851523847 1118899341760 1128762254528 1132475288260 1256468932960 1410952818160 1454336685976 1530880722080 1613570629696 1811960461216 1817920857470 1916115122764 2016963287120 2151703047694 2264950576520 2395143903455 2512937865920 2821905636320 2908673371952 3061761444160 3454049629193 3623920922432 3635841714940 3832230245528 4033926574240 4303406095388 4529901153040 4790287806910 5379257619235 5643811272640 5817346743904 6908099258386 7271683429880 7664460491056 8067853148480 8606812190776 9059802306080 9580575613820 10758515238470 11634693487808 13816198516772 14543366859760 15328920982112 17213624381552 17270248145965 18119604612160 19161151227640 21517030476940 27632397033544 29086733719520 30657841964224 34427248763104 34540496291930 38322302455280 43034060953880 55264794067088 58173467439040 65626942954667 68854497526208 69080992583860 76644604910560 86068121907760 110529588134176 131253885909334 138161985167720 153289209821120 172136243815520 221059176268352 262507771818668 276323970335440 328134714773335 344272487631040 525015543637336 552647940670880 656269429546670 1050031087274672 1105295881341760 1312538859093340 2100062174549344 2625077718186680 4200124349098688 5250155436373360 10500310872746720 21000621745493440
• Sum of all divisors σ(n): 54059651026430400
• Sum of proper divisors (its aliquot sum) s(n): 33059029280936960
• 21000621745493440 is an abundant number, because the sum of its proper divisors (33059029280936960) is greater than itself. Its abundance is 12058407535443520

Bases of 21000621745493440

• Binary: 1001010100110111111010001000111001100111101010111000000₂
• Hexadecimal: 0x4A9BF44733D5C0
• Base-36: 5QS3KFZA4SG

Squares and roots of 21000621745493440

• 21000621745493440 squared (21000621745493440²) is 441026113697291938612949083033600
• 21000621745493440 cubed (21000621745493440³) is 9261822593641811359191095385922404321164099584000
• The square root of 21000621745493440 is 144915912.6717747309
• The cube root of 21000621745493440 is 275895.1403869135

Scales and comparisons

• 21,000,621,745,493,440 seconds is equal to 667,754,812 years, 16 weeks, 3 days, 22 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,000,621,745,493,440 would take you about two billion, three million, two hundred sixty-four thousand, four hundred thirty-six 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 21000621745493440 cubic inches would be around 22991.3 feet tall.

Recreational maths with 21000621745493440

• 21000621745493440 backwards is 04439454712600012
• The number of decimal digits it has is: 17
• The sum of 21000621745493440's digits is 52
• More coming soon!