81738557376

Names of 81738557376

• Cardinal: 81738557376 can be written as Eighty-one billion, seven hundred thirty-eight million, five hundred fifty-seven thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 8.1738557376 × 10¹⁰

Factors of 81738557376

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 505

Divisors of 81738557376

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 29 32 42 48 49 56 58 64 84 87 96 98 112 116 127 147 168 174 192 196 203 224 232 254 294 336 337 343 348 381 392 406 448 464 508 588 609 672 674 686 696 762 784 812 889 928 1011 1016 1029 1176 1218 1344 1348 1372 1392 1421 1524 1568 1624 1778 1856 2022 2032 2058 2352 2359 2436 2667 2696 2744 2784 2842 3048 3136 3248 3556 3683 4044 4064 4116 4263 4704 4718 4872 5334 5392 5488 5568 5684 6096 6223 6496 7077 7112 7366 8088 8128 8232 8526 9408 9436 9744 9773 9947 10668 10784 10976 11049 11368 12192 12446 12992 14154 14224 14732 16176 16464 16513 17052 18669 18872 19488 19546 19894 21336 21568 21952 22098 22736 24384 24892 25781 28308 28448 29319 29464 29841 32352 32928 33026 34104 37338 37744 38976 39092 39788 42672 42799 43561 44196 45472 49539 49784 51562 56616 56896 58638 58928 59682 64704 65856 66052 68208 68411 74676 75488 77343 78184 79576 85344 85598 87122 88392 90944 99078 99568 103124 113232 115591 117276 117856 119364 128397 130683 132104 136416 136822 149352 150976 154686 156368 159152 170688 171196 174244 176784 180467 198156 199136 205233 206248 226464 231182 234552 235712 238728 256794 261366 264208 272832 273644 298704 299593 309372 312736 318304 342392 346773 348488 353568 360934 396312 398272 410466 412496 452928 462364 469104 477456 478877 513588 522732 528416 541401 547288 597408 599186 618744 625472 636608 684784 693546 696976 707136 721868 792624 820932 824992 898779 924728 938208 954912 957754 1027176 1045464 1056832 1082802 1094576 1194816 1198372 1237488 1241171 1263269 1369568 1387092 1393952 1436631 1443736 1585248 1641864 1649984 1797558 1849456 1876416 1909824 1915508 2054352 2090928 2097151 2165604 2189152 2396744 2474976 2482342 2526538 2739136 2774184 2787904 2873262 2887472 3170496 3283728 3352139 3595116 3698912 3723513 3789807 3831016 4108704 4181856 4194302 4331208 4378304 4793488 4949952 4964684 5053076 5548368 5746524 5774944 6291453 6567456 6704278 7190232 7397824 7447026 7579614 7662032 8217408 8363712 8388604 8662416 8688197 9586976 9929368 10056417 10106152 11096736 11493048 11549888 12582906 13134912 13408556 14380464 14680057 14894052 15159228 15324064 16777208 17324832 17376394 19173952 19858736 20112834 20212304 22193472 22986096 25165812 26064591 26817112 28760928 29360114 29788104 30318456 30648128 33554416 34649664 34752788 39717472 40225668 40424608 44040171 45972192 50331624 52129182 53634224 57521856 58720228 59576208 60636912 60817379 67108832 69505576 79434944 80451336 80849216 88080342 91944384 100663248 104258364 107268448 117440456 119152416 121273824 121634758 134217664 139011152 160902672 176160684 182452137 201326496 208516728 214536896 234880912 238304832 242547648 243269516 278022304 321805344 352321368 364904274 402652992 417033456 425721653 469761824 486539032 556044608 643610688 704642736 729808548 834066912 851443306 939523648 973078064 1277164959 1409285472 1459617096 1668133824 1702886612 1946156128 2554329918 2818570944 2919234192 3405773224 3892312256 5108659836 5838468384 6811546448 10217319672 11676936768 13623092896 20434639344 27246185792 40869278688 81738557376
• Sum of all divisors σ(n): 263737344000
• Sum of proper divisors (its aliquot sum) s(n): 181998786624
• 81738557376 is an abundant number, because the sum of its proper divisors (181998786624) is greater than itself. Its abundance is 100260229248

Bases of 81738557376

• Binary: 1001100000111111111110110011111000000₂
• Hexadecimal: 0x1307FF67C0
• Base-36: 11JT0YIO

Squares and roots of 81738557376

• 81738557376 squared (81738557376²) is 6681191761909644005376
• 81738557376 cubed (81738557376³) is 546110976170909967861160628453376
• The square root of 81738557376 is 285899.5581948317
• The cube root of 81738557376 is 4339.8593641559

Scales and comparisons

• 81,738,557,376 seconds is equal to 2,599 years, 1 week, 5 days, 2 hours, 49 minutes, 36 seconds.
• To count from 1 to 81,738,557,376 would take you about five thousand, one hundred ninety-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 81738557376 cubic inches would be around 361.7 feet tall.

Recreational maths with 81738557376

• 81738557376 backwards is 67375583718
• The number of decimal digits it has is: 11
• The sum of 81738557376's digits is 60
• More coming soon!