81085142016

Names of 81085142016

• Cardinal: 81085142016 can be written as Eighty-one billion, eighty-five million, one hundred forty-two thousand and sixteen.

Scientific notation

• Scientific notation: 8.1085142016 × 10¹⁰

Factors of 81085142016

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 23
• Sum of prime factors: 154

Divisors of 81085142016

• Number of divisors d(n): 286
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 81 96 108 128 144 149 162 192 216 243 256 288 298 324 384 432 447 486 512 576 596 648 729 768 864 894 972 1024 1152 1192 1296 1341 1458 1536 1728 1788 1944 2187 2304 2384 2592 2682 2916 3072 3456 3576 3888 4023 4374 4608 4768 5184 5364 5832 6561 6912 7152 7776 8046 8748 9216 9536 10368 10728 11664 12069 13122 13824 14304 15552 16092 17496 19072 19683 20736 21456 23328 24138 26244 27648 28608 31104 32184 34992 36207 38144 39366 41472 42912 46656 48276 52488 57216 59049 62208 64368 69984 72414 76288 78732 82944 85824 93312 96552 104976 108621 114432 118098 124416 128736 139968 144828 152576 157464 171648 177147 186624 193104 209952 217242 228864 236196 248832 257472 279936 289656 314928 325863 343296 354294 373248 386208 419904 434484 457728 472392 514944 531441 559872 579312 629856 651726 686592 708588 746496 772416 839808 868968 944784 977589 1029888 1062882 1119744 1158624 1259712 1303452 1373184 1417176 1544832 1679616 1737936 1889568 1955178 2059776 2125764 2239488 2317248 2519424 2606904 2834352 2932767 3089664 3359232 3475872 3779136 3910356 4119552 4251528 4634496 5038848 5213808 5668704 5865534 6179328 6718464 6951744 7558272 7820712 8503056 8798301 9268992 10077696 10427616 11337408 11731068 12358656 13903488 15116544 15641424 17006112 17596602 18537984 20155392 20855232 22674816 23462136 26394903 27806976 30233088 31282848 34012224 35193204 37075968 41710464 45349632 46924272 52789806 55613952 60466176 62565696 68024448 70386408 79184709 83420928 90699264 93848544 105579612 111227904 125131392 136048896 140772816 158369418 166841856 181398528 187697088 211159224 250262784 272097792 281545632 316738836 333683712 375394176 422318448 500525568 544195584 563091264 633477672 750788352 844636896 1001051136 1126182528 1266955344 1501576704 1689273792 2252365056 2533910688 3003153408 3378547584 4504730112 5067821376 6757095168 9009460224 10135642752 13514190336 20271285504 27028380672 40542571008 81085142016
• Sum of all divisors σ(n): 244768285050
• Sum of proper divisors (its aliquot sum) s(n): 163683143034
• 81085142016 is an abundant number, because the sum of its proper divisors (163683143034) is greater than itself. Its abundance is 82598001018

Bases of 81085142016

• Binary: 1001011100001000011010001010000000000₂
• Hexadecimal: 0x12E10D1400
• Base-36: 11900000

Squares and roots of 81085142016

• 81085142016 squared (81085142016²) is 6574800255754888544256
• 81085142016 cubed (81085142016³) is 533118612464718258897249261060096
• The square root of 81085142016 is 284754.5294038361
• The cube root of 81085142016 is 4328.2641805023

Scales and comparisons

• 81,085,142,016 seconds is equal to 2,578 years, 13 weeks, 2 days, 10 hours, 33 minutes, 36 seconds.
• To count from 1 to 81,085,142,016 would take you about five thousand, one hundred fifty-six 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 81085142016 cubic inches would be around 360.7 feet tall.

Recreational maths with 81085142016

• 81085142016 backwards is 61024158018
• 81085142016 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81085142016's digits is 36
• More coming soon!