81555496960

Names of 81555496960

• Cardinal: 81555496960 can be written as Eighty-one billion, five hundred fifty-five million, four hundred ninety-six thousand, nine hundred sixty.

Scientific notation

• Scientific notation: 8.155549696 × 10¹⁰

Factors of 81555496960

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 4738

Divisors of 81555496960

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 61 64 70 80 112 122 128 140 160 224 244 256 280 305 320 427 448 488 512 560 610 640 854 896 976 1024 1120 1220 1280 1708 1792 1952 2048 2135 2240 2440 2560 3416 3584 3904 4096 4270 4480 4663 4880 5120 6832 7168 7808 8192 8540 8960 9326 9760 10240 13664 14336 15616 17080 17920 18652 19520 20480 23315 27328 28672 31232 32641 34160 35840 37304 39040 40960 46630 54656 57344 62464 65282 68320 71680 74608 78080 93260 109312 124928 130564 136640 143360 149216 156160 163205 186520 218624 249856 261128 273280 284443 286720 298432 312320 326410 373040 437248 499712 522256 546560 568886 596864 624640 652820 746080 874496 1044512 1093120 1137772 1193728 1249280 1305640 1422215 1492160 1748992 1991101 2089024 2186240 2275544 2387456 2498560 2611280 2844430 2984320 3497984 3982202 4178048 4372480 4551088 4774912 5222560 5688860 5968640 7964404 8356096 8744960 9102176 9549824 9955505 10445120 11377720 11937280 15928808 16712192 17489920 18204352 19099648 19911010 20890240 22755440 23874560 31857616 33424384 36408704 38199296 39822020 41780480 45510880 47749120 63715232 66848768 72817408 79644040 83560960 91021760 95498240 127430464 133697536 145634816 159288080 167121920 182043520 190996480 254860928 267395072 291269632 318576160 334243840 364087040 509721856 582539264 637152320 668487680 728174080 1019443712 1165078528 1274304640 1336975360 1456348160 2038887424 2330157056 2548609280 2912696320 4077774848 5097218560 5825392640 8155549696 10194437120 11650785280 16311099392 20388874240 40777748480 81555496960
• Sum of all divisors σ(n): 227397088512
• Sum of proper divisors (its aliquot sum) s(n): 145841591552
• 81555496960 is an abundant number, because the sum of its proper divisors (145841591552) is greater than itself. Its abundance is 64286094592

Bases of 81555496960

• Binary: 1001011111101000101100010000000000000₂
• Hexadecimal: 0x12FD162000
• Base-36: 11GS1C74

Squares and roots of 81555496960

• 81555496960 squared (81555496960²) is 6651299084392569241600
• 81555496960 cubed (81555496960³) is 542450002257228964229898305536000
• The square root of 81555496960 is 285579.2306173543
• The cube root of 81555496960 is 4336.6171150905

Scales and comparisons

• 81,555,496,960 seconds is equal to 2,593 years, 11 weeks, 8 hours, 42 minutes, 40 seconds.
• To count from 1 to 81,555,496,960 would take you about five thousand, one hundred eighty-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 81555496960 cubic inches would be around 361.4 feet tall.

Recreational maths with 81555496960

• 81555496960 backwards is 06969455518
• The number of decimal digits it has is: 11
• The sum of 81555496960's digits is 58
• More coming soon!