21155535344380800

Names of 21155535344380800

• Cardinal: 21155535344380800 can be written as Twenty-one quadrillion, one hundred fifty-five trillion, five hundred thirty-five billion, three hundred forty-four million, three hundred eighty thousand, eight hundred.

Scientific notation

• Scientific notation: 2.11555353443808 × 10¹⁶

Factors of 21155535344380800

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 3779934205

Divisors of 21155535344380800

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 25 30 32 33 40 44 48 50 53 55 60 64 66 75 80 88 96 100 106 110 120 128 132 150 159 160 165 176 192 200 212 220 240 264 265 275 300 318 320 330 352 384 400 424 440 480 528 530 550 583 600 636 640 660 704 795 800 825 848 880 960 1056 1060 1100 1166 1200 1272 1320 1325 1408 1590 1600 1650 1696 1749 1760 1920 2112 2120 2200 2332 2400 2544 2640 2650 2915 3180 3200 3300 3392 3498 3520 3975 4224 4240 4400 4664 4800 5088 5280 5300 5830 6360 6600 6784 6996 7040 7950 8480 8745 8800 9328 9600 10176 10560 10600 11660 12720 13200 13992 14575 15900 16960 17490 17600 18656 20352 21120 21200 23320 25440 26400 27984 29150 31800 33920 34980 35200 37312 42400 43725 46640 50880 52800 55968 58300 63600 69960 74624 84800 87450 93280 101760 105600 111936 116600 127200 139920 169600 174900 186560 223872 233200 254400 279840 349800 373120 466400 508800 559680 699600 932800 1119360 1399200 1865600 2798400 5596800 3779934131 7559868262 11339802393 15119736524 18899670655 22679604786 30239473048 37799341310 41579275441 45359209572 56699011965 60478946096 75598682620 83158550882 90718419144 94498353275 113398023930 120957892192 124737826323 151197365240 166317101764 181436838288 188996706550 200336508943 207896377205 226796047860 241915784384 249475652646 283495059825 302394730480 332634203528 362873676576 377993413100 400673017886 415792754410 453592095720 483831568768 498951305292 566990119650 601009526829 604789460960 623689131615 665268407056 725747353152 755986826200 801346035772 831585508820 907184191440 997902610584 1001682544715 1039481886025 1133980239300 1202019053658 1209578921920 1247378263230 1330536814112 1451494706304 1511973652400 1602692071544 1663171017640 1814368382880 1995805221168 2003365089430 2078963772050 2203701598373 2267960478600 2404038107316 2419157843840 2494756526460 2661073628224 3005047634145 3023947304800 3118445658075 3205384143088 3326342035280 3628736765760 3991610442336 4006730178860 4157927544100 4407403196746 4535920957200 4808076214632 4989513052920 5008412723575 5322147256448 6010095268290 6047894609600 6236891316150 6410768286176 6611104795119 6652684070560 7257473531520 7983220884672 8013460357720 8315855088200 8814806393492 9071841914400 9616152429264 9979026105840 10016825447150 11018507991865 12020190536580 12095789219200 12473782632300 12821536572352 13222209590238 13305368141120 15025238170725 15966441769344 16026920715440 16631710176400 17629612786984 18143683828800 19232304858528 19958052211680 20033650894300 22037015983730 24040381073160 24947565264600 25643073144704 26444419180476 26610736282240 30050476341450 32053841430880 33055523975595 33263420352800 35259225573968 36287367657600 38464609717056 39916104423360 40067301788600 44074031967460 48080762146320 49895130529200 52888838360952 55092539959325 60100952682900 64107682861760 66111047951190 66526840705600 70518451147936 76929219434112 79832208846720 80134603577200 88148063934920 96161524292640 99790261058400 105777676721904 110185079918650 120201905365800 128215365723520 132222095902380 133053681411200 141036902295872 160269207154400 165277619877975 176296127869840 192323048585280 199580522116800 211555353443808 220370159837300 240403810731600 264444191804760 282073804591744 320538414308800 330555239755950 352592255739680 384646097170560 399161044233600 423110706887616 440740319674600 480807621463200 528888383609520 641076828617600 661110479511900 705184511479360 846221413775232 881480639349200 961615242926400 1057776767219040 1322220959023800 1410369022958720 1762961278698400 1923230485852800 2115553534438080 2644441918047600 3525922557396800 4231107068876160 5288883836095200 7051845114793600 10577767672190400 21155535344380800
• Sum of all divisors σ(n): 77449943180488320
• Sum of proper divisors (its aliquot sum) s(n): 56294407836107520
• 21155535344380800 is an abundant number, because the sum of its proper divisors (56294407836107520) is greater than itself. Its abundance is 35138872491726720

Bases of 21155535344380800

• Binary: 1001011001010001101100011101001001111000010101110000000₂
• Hexadecimal: 0x4B28D8E93C2B80
• Base-36: 5SB0EROB3PC

Squares and roots of 21155535344380800

• 21155535344380800 squared (21155535344380800²) is 447556675707345254054135408640000
• 21155535344380800 cubed (21155535344380800³) is 9468301071540318304662277999589217735770112000000
• The square root of 21155535344380800 is 145449425.3834672253
• The cube root of 21155535344380800 is 276571.8702822661

Scales and comparisons

• 21,155,535,344,380,800 seconds is equal to 672,680,585 years, 30 weeks, 2 days, 13 hours, 20 minutes.
• To count from 1 to 21,155,535,344,380,800 would take you about two billion, eighteen million, forty-one thousand, seven hundred fifty-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 21155535344380800 cubic inches would be around 23047.7 feet tall.

Recreational maths with 21155535344380800

• 21155535344380800 backwards is 00808344353555112
• The number of decimal digits it has is: 17
• The sum of 21155535344380800's digits is 57
• More coming soon!