81813616927744

Names of 81813616927744

• Cardinal: 81813616927744 can be written as Eighty-one trillion, eight hundred thirteen billion, six hundred sixteen million, nine hundred twenty-seven thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 8.1813616927744 × 10¹³

Factors of 81813616927744

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 1311

Divisors of 81813616927744

• Number of divisors d(n): 297
• Complete list of divisors:
  1 2 4 8 13 16 17 26 32 34 52 64 68 104 128 136 169 208 221 256 272 289 338 416 442 512 544 578 676 832 884 1024 1088 1156 1279 1352 1664 1768 2176 2312 2558 2704 2873 3328 3536 3757 4352 4624 5116 5408 5746 6656 7072 7514 8704 9248 10232 10816 11492 13312 14144 15028 16627 17408 18496 20464 21632 21743 22984 28288 30056 33254 36992 40928 43264 43486 45968 48841 56576 60112 66508 73984 81856 86528 86972 91936 97682 113152 120224 133016 147968 163712 173056 173944 183872 195364 216151 226304 240448 266032 282659 295936 327424 347888 367744 369631 390728 432302 480896 532064 565318 654848 695776 735488 739262 781456 864604 961792 1064128 1130636 1309696 1391552 1470976 1478524 1562912 1635841 1729208 1923584 2128256 2261272 2783104 2941952 2957048 3125824 3271682 3458416 3674567 3847168 4256512 4522544 4805203 5566208 5914096 6251648 6543364 6916832 7349134 8513024 9045088 9610406 11132416 11828192 12503296 13086728 13833664 14698268 17026048 18090176 19220812 21265933 22264832 23656384 25006592 26173456 27667328 27809297 29396536 36180352 38441624 42531866 47312768 50013184 52346912 55334656 55618594 58793072 62467639 72360704 76883248 85063732 94625536 104693824 110669312 111237188 117586144 124935278 144721408 153766496 170127464 189251072 209387648 221338624 222474376 235172288 249870556 276457129 289442816 307532992 340254928 361520861 378502144 418775296 444948752 470344576 472758049 499741112 552914258 615065984 680509856 723041722 837550592 889897504 940689152 945516098 999482224 1105828516 1230131968 1361019712 1446083444 1675101184 1779795008 1881378304 1891032196 1998964448 2211657032 2460263936 2722039424 2892166888 3559590016 3762756608 3782064392 3997928896 4423314064 4699771193 4920527872 5444078848 5784333776 6145854637 7119180032 7564128784 7995857792 8846628128 9399542386 10888157696 11568667552 12291709274 14238360064 15128257568 15991715584 17693256256 18799084772 21776315392 23137335104 24583418548 28476720128 30256515136 31983431168 35386512512 37598169544 46274670208 49166837096 60513030272 63966862336 70773025024 75196339088 79896110281 92549340416 98333674192 121026060544 141546050048 150392678176 159792220562 185098680832 196667348384 242052121088 283092100096 300785356352 319584441124 370197361664 393334696768 484104242176 601570712704 639168882248 786669393536 1203141425408 1278337764496 1573338787072 2406282850816 2556675528992 3146677574144 4812565701632 5113351057984 6293355148288 10226702115968 20453404231936 40906808463872 81813616927744
• Sum of all divisors σ(n): 188273019262347
• Sum of proper divisors (its aliquot sum) s(n): 106459402334603
• 81813616927744 is an abundant number, because the sum of its proper divisors (106459402334603) is greater than itself. Its abundance is 24645785406859

Bases of 81813616927744

• Binary: 10010100110100010110111100100110010010000000000₂
• Hexadecimal: 0x4A68B7932400
• Base-36: T00NN5JB4

Squares and roots of 81813616927744

• 81813616927744 squared (81813616927744²) is 6693467914799639585316929536
• 81813616927744 cubed (81813616927744³) is 547616819899563127119395338797631651446784
• 81813616927744 is a perfect square number. Its square root is 9045088
• The cube root of 81813616927744 is 43411.8737160493

Scales and comparisons

• 81,813,616,927,744 seconds is equal to 2,601,419 years, 49 weeks, 3 days, 14 hours, 9 minutes, 4 seconds.
• To count from 1 to 81,813,616,927,744 would take you about six million, five hundred three thousand, five hundred forty-nine 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 81813616927744 cubic inches would be around 3617.7 feet tall.

Recreational maths with 81813616927744

• 81813616927744 backwards is 44772961631818
• The number of decimal digits it has is: 14
• The sum of 81813616927744's digits is 67
• More coming soon!