81537316224

Names of 81537316224

• Cardinal: 81537316224 can be written as Eighty-one billion, five hundred thirty-seven million, three hundred sixteen thousand, two hundred twenty-four.

Scientific notation

• Scientific notation: 8.1537316224 × 10¹⁰

Factors of 81537316224

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 1138

Divisors of 81537316224

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 3 4 6 7 8 12 13 14 16 19 21 24 26 28 32 38 39 42 48 52 56 57 64 76 78 84 91 96 104 112 114 127 128 133 152 156 168 182 192 208 224 228 247 254 266 273 304 312 336 364 381 384 399 416 448 456 494 508 532 546 608 624 672 728 741 762 798 832 889 896 912 967 988 1016 1064 1092 1216 1248 1344 1456 1482 1524 1596 1651 1664 1729 1778 1824 1934 1976 2032 2128 2184 2413 2432 2496 2667 2688 2901 2912 2964 3048 3192 3302 3458 3556 3648 3868 3952 4064 4256 4368 4826 4953 4992 5187 5334 5802 5824 5928 6096 6384 6604 6769 6916 7112 7239 7296 7736 7904 8128 8512 8736 9652 9906 10374 10668 11557 11604 11648 11856 12192 12571 12768 13208 13538 13832 14224 14478 15472 15808 16256 16891 17024 17472 18373 19304 19812 20307 20748 21336 23114 23208 23712 24384 25142 25536 26416 27076 27664 28448 28956 30944 31369 31616 33782 34671 34944 36746 37713 38608 39624 40614 41496 42672 46228 46416 47424 48768 50284 50673 51072 52832 54152 55119 55328 56896 57912 61888 62738 67564 69342 73492 75426 77216 79248 81228 82992 85344 87997 92456 92832 94107 94848 100568 101346 105664 108304 110238 110656 113792 115824 122809 123776 125476 128611 135128 138684 146984 150852 154432 158496 162456 165984 170688 175994 184912 185664 188214 201136 202692 211328 216608 219583 220476 221312 231648 238849 245618 250952 257222 263991 270256 277368 293968 301704 308864 316992 324912 331968 341376 351988 368427 369824 371328 376428 385833 402272 405384 433216 439166 440952 463296 477698 491236 501904 514444 527982 540512 554736 587936 603408 633984 649824 658749 663936 703976 716547 736854 739648 752856 771666 804544 810768 859663 866432 878332 881904 926592 955396 982472 1003808 1028888 1055964 1081024 1109472 1175872 1206816 1299648 1317498 1407952 1433094 1473708 1479296 1505712 1543332 1596517 1609088 1621536 1671943 1719326 1756664 1763808 1910792 1964944 2007616 2057776 2111928 2162048 2218944 2333371 2351744 2413632 2578989 2599296 2634996 2815904 2866188 2947416 3011424 3086664 3193034 3243072 3343886 3438652 3513328 3527616 3821584 3929888 4015232 4115552 4223856 4437888 4666742 4789551 4827264 5015829 5157978 5269992 5631808 5732376 5894832 6022848 6173328 6386068 6486144 6687772 6877304 7000113 7026656 7055232 7643168 7859776 8231104 8447712 9333484 9579102 10031658 10315956 10539984 11175619 11263616 11464752 11789664 12045696 12346656 12772136 13375544 13754608 14000226 14053312 15286336 15719552 16333597 16462208 16895424 18666968 19158204 20063316 20631912 21079968 22351238 22929504 23579328 24693312 25544272 26751088 27509216 28000452 28106624 30333823 30572672 32667194 33526857 33790848 37333936 38316408 40126632 41263824 42159936 44702476 45859008 47158656 49000791 49386624 51088544 53502176 55018432 56000904 60667646 65334388 67053714 74667872 76632816 80253264 82527648 84319872 89404952 91001469 91718016 98001582 102177088 107004352 110036864 112001808 121335292 130668776 134107428 149335744 153265632 160506528 165055296 178809904 182002938 196003164 204354176 212336761 214008704 224003616 242670584 261337552 268214856 298671488 306531264 321013056 330110592 357619808 364005876 392006328 424673522 448007232 485341168 522675104 536429712 613062528 637010283 642026112 715239616 728011752 784012656 849347044 896014464 970682336 1045350208 1072859424 1274020566 1430479232 1456023504 1568025312 1698694088 1941364672 2090700416 2145718848 2548041132 2912047008 3136050624 3397388176 3882729344 4291437696 5096082264 5824094016 6272101248 6794776352 10192164528 11648188032 13589552704 20384329056 27179105408 40768658112 81537316224
• Sum of all divisors σ(n): 283095859200
• Sum of proper divisors (its aliquot sum) s(n): 201558542976
• 81537316224 is an abundant number, because the sum of its proper divisors (201558542976) is greater than itself. Its abundance is 120021226752

Bases of 81537316224

• Binary: 1001011111100000000001011010110000000₂
• Hexadecimal: 0x12FC00B580
• Base-36: 11GH7NUO

Squares and roots of 81537316224

• 81537316224 squared (81537316224²) is 6648333937012573618176
• 81537316224 cubed (81537316224³) is 542087306584945112969296346087424
• The square root of 81537316224 is 285547.3975087149
• The cube root of 81537316224 is 4336.2948447625

Scales and comparisons

• 81,537,316,224 seconds is equal to 2,592 years, 32 weeks, 6 days, 22 hours, 30 minutes, 24 seconds.
• To count from 1 to 81,537,316,224 would take you about five thousand, one hundred eighty-five 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 81537316224 cubic inches would be around 361.4 feet tall.

Recreational maths with 81537316224

• 81537316224 backwards is 42261373518
• 81537316224 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81537316224's digits is 42
• More coming soon!