81474744736

Names of 81474744736

• Cardinal: 81474744736 can be written as Eighty-one billion, four hundred seventy-four million, seven hundred forty-four thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 8.1474744736 × 10¹⁰

Factors of 81474744736

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 476

Divisors of 81474744736

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 32 37 41 44 56 71 74 77 82 88 112 142 148 154 164 176 224 259 284 287 296 307 308 328 352 407 451 497 518 568 574 592 614 616 656 781 814 902 994 1036 1136 1148 1184 1228 1232 1312 1517 1562 1628 1804 1988 2072 2149 2272 2296 2456 2464 2627 2849 2911 3034 3124 3157 3256 3377 3608 3976 4144 4298 4592 4912 5254 5467 5698 5822 6068 6248 6314 6512 6754 7216 7952 8288 8596 9184 9824 10508 10619 10934 11359 11396 11644 12136 12496 12587 12628 13024 13508 14432 15904 16687 17192 18389 20377 21016 21238 21797 21868 22718 22792 23288 23639 24272 24992 25174 25256 27016 28897 32021 33374 34384 36778 40754 42032 42476 43594 43736 45436 45584 46576 47278 48544 50348 50512 54032 57794 64042 66748 68768 73556 79513 81508 84064 84952 87188 87472 88109 90872 91168 93152 94556 100696 101024 107707 108064 115588 116809 124949 128084 133496 138457 147112 152579 159026 163016 169904 174376 174944 176218 181744 189112 201392 202279 215414 224147 231176 233618 239767 249898 256168 266992 276914 294224 305158 318052 326032 339808 348752 352436 363488 378224 402784 404558 430828 448294 462352 465719 467236 479534 499796 512336 533984 553828 588448 610316 636104 652064 697504 704872 753949 756448 806489 809116 861656 874643 893677 896588 924704 931438 934472 959068 969199 999592 1024672 1107656 1184777 1220632 1272208 1409744 1507898 1612978 1618232 1678369 1723312 1749286 1787354 1793176 1862876 1868944 1918136 1938398 1999184 2215312 2369554 2441264 2544416 2819488 3015796 3225956 3236464 3260033 3356738 3446624 3498572 3574708 3586352 3725752 3737888 3836272 3876796 3998368 4430624 4739108 4882528 5122909 5645423 6031592 6255739 6451912 6472928 6520066 6713476 6997144 7149416 7172704 7451504 7672544 7753592 8293439 8871379 9478216 9830447 10245818 11290846 12063184 12511478 12903824 13040132 13426952 13994288 14298832 14903008 15507184 16586878 17742758 18956432 19660894 20491636 22581692 24126368 25022956 25807648 26080264 26853904 27988576 28597664 31014368 33066049 33173756 35485516 35860363 37912864 39321788 40983272 45163384 50045912 52160528 53707808 62099653 66132098 66347512 68813129 70971032 71720726 78643576 81966544 90326768 100091824 104321056 124199306 132264196 132695024 137626258 141942064 143441452 157287152 163933088 180653536 200183648 231462343 248398612 264528392 265390048 275252516 283884128 286882904 314574304 363726539 462924686 496797224 529056784 550505032 573765808 727453078 925849372 993594448 1058113568 1101010064 1147531616 1454906156 1851698744 1987188896 2202020128 2546085773 2909812312 3703397488 5092171546 5819624624 7406794976 10184343092 11639249248 20368686184 40737372368 81474744736
• Sum of all divisors σ(n): 214056235008
• Sum of proper divisors (its aliquot sum) s(n): 132581490272
• 81474744736 is an abundant number, because the sum of its proper divisors (132581490272) is greater than itself. Its abundance is 51106745536

Bases of 81474744736

• Binary: 1001011111000010001011111000110100000₂
• Hexadecimal: 0x12F845F1A0
• Base-36: 11FFYJDS

Squares and roots of 81474744736

• 81474744736 squared (81474744736²) is 6638134029796359709696
• 81474744736 cubed (81474744736³) is 540840275601013425409516664160256
• The square root of 81474744736 is 285437.8123795091
• The cube root of 81474744736 is 4335.1853410875

Scales and comparisons

• 81,474,744,736 seconds is equal to 2,590 years, 33 weeks, 3 days, 17 hours, 32 minutes, 16 seconds.
• To count from 1 to 81,474,744,736 would take you about five thousand, one hundred eighty-one 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 81474744736 cubic inches would be around 361.3 feet tall.

Recreational maths with 81474744736

• 81474744736 backwards is 63744747418
• The number of decimal digits it has is: 11
• The sum of 81474744736's digits is 55
• More coming soon!