81319381294080

Names of 81319381294080

• Cardinal: 81319381294080 can be written as Eighty-one trillion, three hundred nineteen billion, three hundred eighty-one million, two hundred ninety-four thousand and eighty.

Scientific notation

• Scientific notation: 8.131938129408 × 10¹³

Factors of 81319381294080

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 165422

Divisors of 81319381294080

• Number of divisors d(n): 264
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 179 192 240 256 320 358 384 480 512 537 640 716 768 895 960 1024 1074 1280 1432 1536 1790 1920 2148 2560 2685 2864 3072 3580 3840 4296 5120 5370 5728 7160 7680 8592 10740 11456 14320 15360 17184 21480 22912 28640 32041 34368 42960 45824 57280 64082 68736 85920 91648 96123 114560 128164 137472 160205 165233 171840 183296 192246 229120 256328 274944 320410 330466 343680 384492 458240 480615 495699 512656 549888 640820 660932 687360 768984 826165 916480 961230 991398 1025312 1281640 1321864 1374720 1537968 1652330 1922460 1982796 2050624 2478495 2563280 2643728 2749440 3075936 3304660 3844920 3965592 4101248 4956990 5126560 5287456 6151872 6609320 7689840 7931184 8202496 9913980 10253120 10574912 12303744 13218640 15379680 15862368 16404992 19827960 20506240 21149824 24607488 26437280 29576707 30759360 31724736 32809984 39655920 41012480 42299648 49214976 52874560 59153414 61518720 63449472 79311840 82024960 84599296 88730121 98429952 105749120 118306828 123037440 126898944 147883535 158623680 164049920 169198592 177460242 211498240 236613656 246074880 253797888 295767070 317247360 354920484 422996480 443650605 473227312 492149760 507595776 591534140 634494720 709840968 845992960 887301210 946454624 1183068280 1268989440 1419681936 1774602420 1892909248 2366136560 2537978880 2839363872 3549204840 3785818496 4732273120 5294230553 5678727744 7098409680 7571636992 9464546240 10588461106 11357455488 14196819360 15143273984 15882691659 18929092480 21176922212 22714910976 26471152765 28393638720 30286547968 31765383318 37858184960 42353844424 45429821952 52942305530 56787277440 63530766636 75716369920 79413458295 84707688848 90859643904 105884611060 113574554880 127061533272 151432739840 158826916590 169415377696 211769222120 227149109760 254123066544 317653833180 338830755392 423538444240 454298219520 508246133088 635307666360 677661510784 847076888480 1016492266176 1270615332720 1355323021568 1694153776960 2032984532352 2541230665440 2710646043136 3388307553920 4065969064704 5082461330880 5421292086272 6776615107840 8131938129408 10164922661760 13553230215680 16263876258816 20329845323520 27106460431360 40659690647040 81319381294080
• Sum of all divisors σ(n): 261557703589392
• Sum of proper divisors (its aliquot sum) s(n): 180238322295312
• 81319381294080 is an abundant number, because the sum of its proper divisors (180238322295312) is greater than itself. Its abundance is 98918941001232

Bases of 81319381294080

• Binary: 10010011111010110100100110101011101110000000000₂
• Hexadecimal: 0x49F5A4D5DC00
• Base-36: STPLW0NPC

Squares and roots of 81319381294080

• 81319381294080 squared (81319381294080²) is 6612841774051968215443046400
• 81319381294080 cubed (81319381294080³) is 537752201661552426024705986799769485312000
• The square root of 81319381294080 is 9017725.9491559179
• The cube root of 81319381294080 is 43324.2801267499

Scales and comparisons

• 81,319,381,294,080 seconds is equal to 2,585,704 years, 40 weeks, 6 days, 18 hours, 8 minutes.
• To count from 1 to 81,319,381,294,080 would take you about six million, four hundred sixty-four thousand, two hundred sixty-one 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 81319381294080 cubic inches would be around 3610.4 feet tall.

Recreational maths with 81319381294080

• 81319381294080 backwards is 08049218391318
• The number of decimal digits it has is: 14
• The sum of 81319381294080's digits is 57
• More coming soon!