81321880141824

Names of 81321880141824

• Cardinal: 81321880141824 can be written as Eighty-one trillion, three hundred twenty-one billion, eight hundred eighty million, one hundred forty-one thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 8.1321880141824 × 10¹³

Factors of 81321880141824

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 25
• Sum of prime factors: 53

Divisors of 81321880141824

• Number of divisors d(n): 600
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 41 42 48 49 56 64 82 84 96 98 112 123 128 147 164 168 192 196 224 246 256 287 294 328 336 343 384 392 448 492 512 574 588 656 672 686 768 784 861 896 984 1024 1029 1148 1176 1312 1344 1372 1536 1568 1722 1792 1968 2009 2048 2058 2296 2352 2401 2624 2688 2744 3072 3136 3444 3584 3936 4018 4096 4116 4592 4704 4802 5248 5376 5488 6027 6144 6272 6888 7168 7203 7872 8036 8192 8232 9184 9408 9604 10496 10752 10976 12054 12288 12544 13776 14063 14336 14406 15744 16072 16384 16464 16807 18368 18816 19208 20992 21504 21952 24108 24576 25088 27552 28126 28672 28812 31488 32144 32928 33614 36736 37632 38416 41984 42189 43008 43904 48216 49152 50176 50421 55104 56252 57344 57624 62976 64288 65856 67228 73472 75264 76832 83968 84378 86016 87808 96432 98441 100352 100842 110208 112504 114688 115248 117649 125952 128576 131712 134456 146944 150528 153664 167936 168756 172032 175616 192864 196882 200704 201684 220416 225008 230496 235298 251904 257152 263424 268912 293888 295323 301056 307328 335872 337512 344064 351232 352947 385728 393764 401408 403368 440832 450016 460992 470596 503808 514304 526848 537824 587776 590646 602112 614656 671744 675024 689087 702464 705894 771456 787528 802816 806736 823543 881664 900032 921984 941192 1007616 1028608 1053696 1075648 1175552 1181292 1204224 1229312 1350048 1378174 1404928 1411788 1542912 1575056 1613472 1647086 1763328 1800064 1843968 1882384 2015232 2057216 2067261 2107392 2151296 2351104 2362584 2408448 2458624 2470629 2700096 2756348 2809856 2823576 3085824 3150112 3226944 3294172 3526656 3600128 3687936 3764768 4114432 4134522 4214784 4302592 4702208 4725168 4823609 4917248 4941258 5400192 5512696 5619712 5647152 5764801 6171648 6300224 6453888 6588344 7053312 7200256 7375872 7529536 8228864 8269044 8429568 8605184 9450336 9647218 9834496 9882516 10800384 11025392 11294304 11529602 12343296 12600448 12907776 13176688 14106624 14400512 14470827 14751744 15059072 16457728 16538088 16859136 17210368 17294403 18900672 19294436 19668992 19765032 21600768 22050784 22588608 23059204 24686592 25200896 25815552 26353376 28801024 28941654 29503488 30118144 32915456 33076176 33765263 34420736 34588806 37801344 38588872 39337984 39530064 40353607 43201536 44101568 45177216 46118408 49373184 50401792 51631104 52706752 57602048 57883308 59006976 60236288 66152352 67530526 68841472 69177612 75602688 77177744 79060128 80707214 86403072 88203136 90354432 92236816 98746368 100803584 101295789 103262208 105413504 115204096 115766616 118013952 120472576 121060821 132304704 135061052 137682944 138355224 151205376 154355488 158120256 161414428 172806144 176406272 180708864 184473632 201607168 202591578 206524416 210827008 230408192 231533232 236356841 240945152 242121642 264609408 270122104 275365888 276710448 302410752 308710976 316240512 322828856 345612288 352812544 361417728 368947264 403214336 405183156 413048832 421654016 463066464 472713682 481890304 484243284 529218816 540244208 553420896 604821504 617421952 632481024 645657712 691224576 705625088 709070523 722835456 737894528 806428672 810366312 826097664 843308032 926132928 945427364 963780608 968486568 1058437632 1080488416 1106841792 1209643008 1234843904 1264962048 1291315424 1411250176 1418141046 1445670912 1475789056 1612857344 1620732624 1654497887 1686616064 1852265856 1890854728 1927561216 1936973136 2116875264 2160976832 2213683584 2419286016 2469687808 2529924096 2582630848 2822500352 2836282092 2891341824 2951578112 3241465248 3308995774 3373232128 3704531712 3781709456 3873946272 4233750528 4321953664 4427367168 4838572032 4939375616 4963493661 5059848192 5165261696 5645000704 5672564184 5782683648 5903156224 6482930496 6617991548 6746464256 7409063424 7563418912 7747892544 8467501056 8643907328 8854734336 9878751232 9926987322 10119696384 10330523392 11290001408 11345128368 11806312448 12965860992 13235983096 13492928512 14818126848 15126837824 15495785088 16935002112 17287814656 17709468672 19757502464 19853974644 20239392768 20661046784 22690256736 23612624896 25931721984 26471966192 29636253696 30253675648 30991570176 33870004224 34575629312 35418937344 39515004928 39707949288 40478785536 41322093568 45380513472 47225249792 51863443968 52943932384 59272507392 60507351296 61983140352 69151258624 70837874688 79030009856 79415898576 82644187136 90761026944 94450499584 103726887936 105887864768 118545014784 121014702592 123966280704 138302517248 141675749376 158831797152 165288374272 181522053888 207453775872 211775729536 237090029568 242029405184 247932561408 276605034496 283351498752 317663594304 330576748544 363044107776 414907551744 423551459072 484058810368 495865122816 553210068992 635327188608 661153497088 726088215552 829815103488 847102918144 968117620736 991730245632 1270654377216 1452176431104 1659630206976 1694205836288 1936235241472 1983460491264 2541308754432 2904352862208 3388411672576 3872470482944 5082617508864 5808705724416 6776823345152 10165235017728 11617411448832 13553646690304 20330470035456 27107293380608 40660940070912 81321880141824
• Sum of all divisors σ(n): 259164260634048
• Sum of proper divisors (its aliquot sum) s(n): 177842380492224
• 81321880141824 is an abundant number, because the sum of its proper divisors (177842380492224) is greater than itself. Its abundance is 96520500350400

Bases of 81321880141824

• Binary: 10010011111011000111001110001110100000000000000₂
• Hexadecimal: 0x49F639C74000
• Base-36: STQR7RMYO

Squares and roots of 81321880141824

• 81321880141824 squared (81321880141824²) is 6613248189801188638354046976
• 81321880141824 cubed (81321880141824³) is 537801776639146797575954983142559238324224
• The square root of 81321880141824 is 9017864.5000811583
• The cube root of 81321880141824 is 43324.7238900491

Scales and comparisons

• 81,321,880,141,824 seconds is equal to 2,585,784 years, 12 weeks, 4 days, 14 hours, 30 minutes, 24 seconds.
• To count from 1 to 81,321,880,141,824 would take you about six million, four hundred sixty-four thousand, four hundred sixty 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 81321880141824 cubic inches would be around 3610.4 feet tall.

Recreational maths with 81321880141824

• 81321880141824 backwards is 42814108812318
• The number of decimal digits it has is: 14
• The sum of 81321880141824's digits is 51
• More coming soon!