81717944645376

Names of 81717944645376

• Cardinal: 81717944645376 can be written as Eighty-one trillion, seven hundred seventeen billion, nine hundred forty-four million, six hundred forty-five thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 8.1717944645376 × 10¹³

Factors of 81717944645376

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 88009622

Divisors of 81717944645376

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 31 32 36 39 48 52 62 64 72 78 93 96 104 117 124 128 144 156 186 192 208 234 248 256 279 288 312 372 384 403 416 468 496 558 576 624 744 768 806 832 936 992 1116 1152 1209 1248 1488 1612 1664 1872 1984 2232 2304 2418 2496 2976 3224 3328 3627 3744 3968 4464 4836 4992 5952 6448 7254 7488 7936 8928 9672 9984 11904 12896 14508 14976 17856 19344 23808 25792 29016 29952 35712 38688 51584 58032 71424 77376 103168 116064 154752 232128 309504 464256 928512 88009573 176019146 264028719 352038292 528057438 704076584 792086157 1056114876 1144124449 1408153168 1584172314 2112229752 2288248898 2728296763 2816306336 3168344628 3432373347 4224459504 4576497796 5456593526 5632612672 6336689256 6864746694 8184890289 8448919008 9152995592 10297120041 10913187052 11265225344 12673378512 13729493388 16369780578 16897838016 18305991184 20594240082 21826374104 22530450688 24554670867 25346757024 27458986776 32739561156 33795676032 35467857919 36611982368 41188480164 43652748208 49109341734 50693514048 54917973552 65479122312 67591352064 70935715838 73223964736 82376960328 87305496416 98218683468 101387028096 106403573757 109835947104 130958244624 141871431676 146447929472 164753920656 174610992832 196437366936 202774056192 212807147514 219671894208 261916489248 283742863352 292895858944 319210721271 329507841312 349221985664 392874733872 425614295028 439343788416 523832978496 567485726704 638421442542 659015682624 698443971328 785749467744 851228590056 878687576832 1047665956992 1134971453408 1276842885084 1318031365248 1571498935488 1702457180112 2095331913984 2269942906816 2553685770168 2636062730496 3142997870976 3404914360224 4539885813632 5107371540336 6285995741952 6809828720448 9079771627264 10214743080672 13619657440896 20429486161344 27239314881792 40858972322688 81717944645376
• Sum of all divisors σ(n): 261922124836736
• Sum of proper divisors (its aliquot sum) s(n): 180204180191360
• 81717944645376 is an abundant number, because the sum of its proper divisors (180204180191360) is greater than itself. Its abundance is 98486235545984

Bases of 81717944645376

• Binary: 10010100101001001110001000011111111011100000000₂
• Hexadecimal: 0x4A52710FF700
• Base-36: SYSPECHS0

Squares and roots of 81717944645376

• 81717944645376 squared (81717944645376²) is 6677822477064736070398181376
• 81717944645376 cubed (81717944645376³) is 545697927532423745533709749555107647717376
• The square root of 81717944645376 is 9039797.8210453357
• The cube root of 81717944645376 is 43394.9452665611

Scales and comparisons

• 81,717,944,645,376 seconds is equal to 2,598,377 years, 45 weeks, 1 day, 12 hours, 9 minutes, 36 seconds.
• To count from 1 to 81,717,944,645,376 would take you about six million, four hundred ninety-five thousand, nine hundred forty-four 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 81717944645376 cubic inches would be around 3616.2 feet tall.

Recreational maths with 81717944645376

• 81717944645376 backwards is 67354644971718
• 81717944645376 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81717944645376's digits is 72
• More coming soon!