81007731498496

Names of 81007731498496

• Cardinal: 81007731498496 can be written as Eighty-one trillion, seven billion, seven hundred thirty-one million, four hundred ninety-eight thousand, four hundred ninety-six.

Scientific notation

• Scientific notation: 8.1007731498496 × 10¹³

Factors of 81007731498496

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 686

Divisors of 81007731498496

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 4 8 11 16 22 32 37 44 61 64 74 88 122 128 137 148 176 181 244 256 257 274 296 352 362 407 488 512 514 548 592 671 704 724 814 976 1028 1096 1184 1342 1408 1448 1507 1628 1952 1991 2056 2192 2257 2368 2684 2816 2827 2896 3014 3256 3904 3982 4112 4384 4514 4736 5069 5368 5632 5654 5792 6028 6512 6697 7808 7964 8224 8357 8768 9028 9472 9509 10138 10736 11041 11308 11584 12056 13024 13394 15616 15677 15928 16448 16714 17536 18056 18944 19018 20276 21472 22082 22616 23168 24112 24797 24827 26048 26788 31232 31354 31856 32896 33428 35072 35209 36112 38036 40552 42944 44164 45232 46336 46517 48224 49594 49654 52096 53576 55759 62708 63712 65792 66856 70144 70418 72224 73667 76072 81104 85888 88328 90464 91927 92672 93034 96448 99188 99308 104192 104599 107152 111518 121451 125416 127424 131584 133712 140836 144448 147334 152144 162208 171776 172447 176656 180928 183854 186068 192896 198376 198616 208384 209198 214304 223036 242902 250832 254848 267424 272767 281672 288896 294668 304288 309209 324416 343552 344894 353312 361856 367708 372136 385792 387299 396752 397232 408517 418396 428608 446072 485804 501664 509696 511687 534848 545534 563344 577792 580049 589336 608576 618418 648832 689788 706624 723712 735416 744272 771584 774598 793504 794464 817034 836792 857216 892144 917489 971608 1003328 1019392 1023374 1069696 1091068 1126688 1155584 1160098 1178672 1217152 1236836 1297664 1302733 1379576 1413248 1447424 1470832 1488544 1512617 1549196 1587008 1588928 1634068 1673584 1714432 1721129 1784288 1834978 1943216 2006656 2046748 2139392 2147749 2182136 2253376 2320196 2357344 2434304 2473672 2595328 2605466 2759152 2826496 2837537 2941664 2977088 3025234 3098392 3174016 3177856 3268136 3347168 3401299 3428864 3442258 3568576 3669956 3886432 4013312 4093496 4278784 4295498 4364272 4493687 4506752 4640392 4714688 4868608 4947344 5210932 5518304 5652992 5675074 5883328 5954176 6050468 6196784 6348032 6355712 6372829 6380539 6536272 6694336 6802598 6884516 7137152 7339912 7772864 8026624 8186992 8590996 8728544 8987374 9013504 9280784 9429376 9894688 10092379 10421864 11036608 11350148 11766656 11908352 12100936 12393568 12696064 12711424 12745658 12761078 13072544 13388672 13605196 13769032 14274304 14330063 14679824 15545728 16373984 16638787 17181992 17457088 17974748 18027008 18561568 18858752 18932419 19789376 20184758 20843728 22073216 22700296 23533312 23625239 23816704 24201872 24787136 25491316 25522156 26145088 26777344 27210392 27538064 28548608 28660126 29359648 31091456 31212907 32747968 33277574 34363984 34914176 35949496 37123136 37717504 37864838 39578752 40369516 41687456 44146432 45400592 47066624 47250478 48403744 49574272 50982632 51044312 52290176 53554688 54420784 55076128 55966829 57320252 58719296 62182912 62425814 65495936 66555148 68727968 69828352 70101119 71898992 74246272 75729676 79157504 79466713 80739032 83374912 88292864 90801184 94500956 96807488 99148544 101965264 102088624 104580352 104988869 108841568 110152256 111933658 114640504 117438592 124851628 130991872 133110296 137455936 139656704 140202238 143797984 148492544 151459352 158315008 158933426 161478064 166749824 181602368 189001912 193614976 198297088 203930528 204177248 209160704 209977738 217683136 220304512 223867316 229281008 234877184 235794673 249703256 261983744 266220592 274911872 280404476 287595968 296985088 302918704 317866852 322956128 333499648 363204736 378003824 387229952 388742569 407861056 408354496 419955476 435366272 440609024 447734632 458562016 469754368 471589346 499406512 532441184 549823744 560808952 575191936 605837408 615635119 635733704 645912256 666999296 726409472 756007648 774459904 777485138 815722112 816708992 839910952 870732544 874133843 881218048 895469264 917124032 943178692 998813024 1064882368 1099647488 1121617904 1150383872 1154877559 1211674816 1231270238 1271467408 1291824512 1452818944 1512015296 1554970276 1631444224 1633417984 1679821904 1741465088 1748267686 1790938528 1834248064 1886357384 1997626048 2129764736 2243235808 2300767744 2309755118 2423349632 2462540476 2542934816 2583649024 2593741403 3024030592 3109940552 3262888448 3266835968 3359643808 3496535372 3581877056 3668496128 3772714768 3995252096 4259529472 4276168259 4486471616 4619510236 4846699264 4925080952 5085869632 5167298048 5187482806 6048061184 6219881104 6719287616 6993070744 7163754112 7336992256 7545429536 7990504192 8519058944 8552336518 8972943232 9239020472 9693398528 9850161904 10171739264 10374965612 12096122368 12439762208 13438575232 13986141488 14327508224 14383475053 15090859072 15981008384 17104673036 17945886464 18478040944 19700323808 20343478528 20749931224 24879524416 26877150464 27972282976 28655016448 28766950106 30181718144 34209346072 35891772928 36956081888 39400647616 40686957056 41499862448 49759048832 53754300928 55944565952 57533900212 60363436288 68418692144 73912163776 78801295232 82999724896 99518097664 111889131904 115067800424 120726872576 136837384288 147824327552 157602590464 158218225583 165999449792 199036195328 223778263808 230135600848 273674768576 295648655104 315205180928 316436451166 331998899584 447556527616 460271201696 547349537152 591297310208 632872902332 663997799168 920542403392 1094699074304 1265745804664 1327995598336 1841084806784 2189398148608 2531491609328 3682169613568 5062983218656 7364339227136 10125966437312 20251932874624 40503865749248 81007731498496
• Sum of all divisors σ(n): 187414136477568
• Sum of proper divisors (its aliquot sum) s(n): 106406404979072
• 81007731498496 is an abundant number, because the sum of its proper divisors (106406404979072) is greater than itself. Its abundance is 25398673480576

Bases of 81007731498496

• Binary: 10010011010110100010101000011110101111000000000₂
• Hexadecimal: 0x49AD150F5E00
• Base-36: SPQFRRYF4

Squares and roots of 81007731498496

• 81007731498496 squared (81007731498496²) is 6562252562532420993650262016
• 81007731498496 cubed (81007731498496³) is 531593193610943692044534869122326709927936
• The square root of 81007731498496 is 9000429.5174450423
• The cube root of 81007731498496 is 43268.8637012741

Scales and comparisons

• 81,007,731,498,496 seconds is equal to 2,575,795 years, 14 weeks, 6 days, 22 hours, 28 minutes, 16 seconds.
• To count from 1 to 81,007,731,498,496 would take you about six million, four hundred thirty-nine thousand, four hundred eighty-eight 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 81007731498496 cubic inches would be around 3605.7 feet tall.

Recreational maths with 81007731498496

• 81007731498496 backwards is 69489413770018
• The number of decimal digits it has is: 14
• The sum of 81007731498496's digits is 67
• More coming soon!