81589490447872

Names of 81589490447872

• Cardinal: 81589490447872 can be written as Eighty-one trillion, five hundred eighty-nine billion, four hundred ninety million, four hundred forty-seven thousand, eight hundred seventy-two.

Scientific notation

• Scientific notation: 8.1589490447872 × 10¹³

Factors of 81589490447872

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 3303

Divisors of 81589490447872

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 8 11 16 22 32 37 44 64 74 88 128 148 176 256 296 352 407 512 592 704 814 1184 1369 1408 1628 2368 2738 2816 3253 3256 4736 5476 5632 6506 6512 9472 10952 13012 13024 15059 18944 21904 26024 26048 30118 35783 43808 52048 52096 60236 71566 87616 104096 104192 120361 120472 143132 175232 208192 208384 240722 240944 286264 350464 416384 481444 481888 572528 700928 832768 962888 963776 1145056 1323971 1665536 1925776 1927552 2290112 2647942 3851552 3855104 4453357 4580224 5295884 7703104 7710208 8906714 9160448 10582009 10591768 15406208 17813428 18320896 21164018 21183536 30812416 35626856 42328036 42367072 48986927 61624832 71253712 84656072 84734144 97973854 116402099 142507424 169312144 169468288 195947708 232804198 285014848 338624288 338936576 391534333 391895416 465608396 570029696 677248576 677873152 783068666 783790832 931216792 1140059392 1354497152 1566137332 1567581664 1862433584 2280118784 2708994304 3132274664 3135163328 3724867168 4306877663 5417988608 6264549328 6270326656 7449734336 8613755326 12529098656 12540653312 14486770321 14899468672 17227510652 25058197312 25081306624 28973540642 29798937344 34455021304 50116394624 57947081284 59597874688 68910042608 100232789248 115894162568 137820085216 159354473531 200465578496 231788325136 275640170432 318708947062 463576650272 551280340864 637417894124 927153300544 1102560681728 1274835788248 1854306601088 2205121363456 2549671576496 3708613202176 5099343152992 7417226404352 10198686305984 20397372611968 40794745223936 81589490447872
• Sum of all divisors σ(n): 182832176843316
• Sum of proper divisors (its aliquot sum) s(n): 101242686395444
• 81589490447872 is an abundant number, because the sum of its proper divisors (101242686395444) is greater than itself. Its abundance is 19653195947572

Bases of 81589490447872

• Binary: 10010100011010010001000100110000111011000000000₂
• Hexadecimal: 0x4A3488987600
• Base-36: SX5P018N4

Squares and roots of 81589490447872

• 81589490447872 squared (81589490447872²) is 6656844951543396331149328384
• 81589490447872 cubed (81589490447872³) is 543128587586914881663988818317596161998848
• The square root of 81589490447872 is 9032690.1002897251
• The cube root of 81589490447872 is 43372.1955257079

Scales and comparisons

• 81,589,490,447,872 seconds is equal to 2,594,293 years, 22 weeks, 2 hours, 37 minutes, 52 seconds.
• To count from 1 to 81,589,490,447,872 would take you about six million, four hundred eighty-five thousand, seven hundred thirty-three 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 81589490447872 cubic inches would be around 3614.3 feet tall.

Recreational maths with 81589490447872

• 81589490447872 backwards is 27874409498518
• The number of decimal digits it has is: 14
• The sum of 81589490447872's digits is 76
• More coming soon!