81439461376

Names of 81439461376

• Cardinal: 81439461376 can be written as Eighty-one billion, four hundred thirty-nine million, four hundred sixty-one thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 8.1439461376 × 10¹⁰

Factors of 81439461376

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 22

Divisors of 81439461376

• Number of divisors d(n): 273
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 32 49 52 56 64 91 98 104 112 128 169 182 196 208 224 256 338 343 364 392 416 448 512 637 676 686 728 784 832 896 1024 1183 1274 1352 1372 1456 1568 1664 1792 2048 2366 2401 2548 2704 2744 2912 3136 3328 3584 4096 4459 4732 4802 5096 5408 5488 5824 6272 6656 7168 8281 8918 9464 9604 10192 10816 10976 11648 12544 13312 14336 16562 16807 17836 18928 19208 20384 21632 21952 23296 25088 26624 28672 31213 33124 33614 35672 37856 38416 40768 43264 43904 46592 50176 53248 57967 62426 66248 67228 71344 75712 76832 81536 86528 87808 93184 100352 115934 117649 124852 132496 134456 142688 151424 153664 163072 173056 175616 186368 200704 218491 231868 235298 249704 264992 268912 285376 302848 307328 326144 346112 351232 372736 405769 436982 463736 470596 499408 529984 537824 570752 605696 614656 652288 692224 702464 811538 873964 927472 941192 998816 1059968 1075648 1141504 1211392 1229312 1304576 1404928 1529437 1623076 1747928 1854944 1882384 1997632 2119936 2151296 2283008 2422784 2458624 2609152 2840383 3058874 3246152 3495856 3709888 3764768 3995264 4239872 4302592 4566016 4845568 4917248 5680766 6117748 6492304 6991712 7419776 7529536 7990528 8479744 8605184 9132032 9834496 11361532 12235496 12984608 13983424 14839552 15059072 15981056 16959488 17210368 18264064 19882681 22723064 24470992 25969216 27966848 29679104 30118144 31962112 33918976 34420736 39765362 45446128 48941984 51938432 55933696 59358208 60236288 63924224 68841472 79530724 90892256 97883968 103876864 111867392 118716416 120472576 127848448 159061448 181784512 195767936 207753728 223734784 237432832 240945152 318122896 363569024 391535872 415507456 447469568 481890304 636245792 727138048 783071744 831014912 894939136 1272491584 1454276096 1566143488 1662029824 2544983168 2908552192 3132286976 5089966336 5817104384 6264573952 10179932672 11634208768 20359865344 40719730688 81439461376
• Sum of all divisors σ(n): 205741791921
• Sum of proper divisors (its aliquot sum) s(n): 124302330545
• 81439461376 is an abundant number, because the sum of its proper divisors (124302330545) is greater than itself. Its abundance is 42862869169

Bases of 81439461376

• Binary: 1001011110110001010111001000000000000₂
• Hexadecimal: 0x12F62B9000
• Base-36: 11EUYAKG

Squares and roots of 81439461376

• 81439461376 squared (81439461376²) is 6632385869212995813376
• 81439461376 cubed (81439461376³) is 540137932826499960060684456165376
• 81439461376 is a perfect square number. Its square root is 285376
• The cube root of 81439461376 is 4334.5594539243

Scales and comparisons

• 81,439,461,376 seconds is equal to 2,589 years, 27 weeks, 1 day, 8 hours, 36 minutes, 16 seconds.
• To count from 1 to 81,439,461,376 would take you about five thousand, one hundred seventy-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 81439461376 cubic inches would be around 361.2 feet tall.

Recreational maths with 81439461376

• 81439461376 backwards is 67316493418
• 81439461376 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81439461376's digits is 52
• More coming soon!