81955345089440

Names of 81955345089440

• Cardinal: 81955345089440 can be written as Eighty-one trillion, nine hundred fifty-five billion, three hundred forty-five million, eighty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 8.195534508944 × 10¹³

Factors of 81955345089440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 16707

Divisors of 81955345089440

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 32 34 40 41 68 80 82 85 136 160 164 170 205 272 289 328 340 410 544 578 656 680 697 820 1156 1312 1360 1394 1445 1640 2312 2720 2788 2890 3221 3280 3485 4624 5576 5780 6442 6560 6970 9248 11152 11560 11849 12884 13421 13940 16105 22304 23120 23698 25768 26842 27880 32210 46240 47396 51536 53684 54757 55760 59245 64420 67105 94792 103072 107368 109514 111520 118490 128840 132061 134210 189584 214736 219028 228157 236980 257680 264122 268420 273785 379168 429472 438056 456314 473960 515360 528244 536840 547570 550261 660305 876112 912628 930869 947920 1056488 1073680 1095140 1100522 1140785 1320610 1752224 1825256 1861738 1895840 2112976 2147360 2190280 2201044 2245037 2281570 2641220 2751305 3650512 3723476 3878669 4225952 4380560 4402088 4490074 4563140 4654345 5282440 5502610 7301024 7446952 7757338 8761120 8804176 8980148 9126280 9308690 9354437 10564880 11005220 11225185 14893904 15514676 17608352 17960296 18252560 18617380 18708874 19393345 21129760 22010440 22450370 29787808 31029352 35920592 36505120 37234760 37417748 38165629 38786690 43229041 44020880 44900740 46772185 62058704 71841184 74469520 74835496 76331258 77573380 86458082 88041760 89801480 93544370 124117408 148939040 149670992 152662516 155146760 159025429 172916164 179602960 187088740 190828145 216145205 299341984 305325032 310293520 318050858 345832328 359205920 374177480 381656290 432290410 610650064 620587040 636101716 691664656 734893697 748354960 763312580 795127145 864580820 1221300128 1272203432 1383329312 1469787394 1496709920 1526625160 1590254290 1729161640 1772390681 2544406864 2939574788 3053250320 3180508580 3458323280 3544781362 3674468485 5088813728 5879149576 6106500640 6361017160 6916646560 7089562724 7348936970 8861953405 11758299152 12493192849 12722034320 14179125448 14697873940 17723906810 23516598304 24986385698 25444068640 28358250896 29395747880 30130641577 35447813620 49972771396 56716501792 58791495760 60261283154 62465964245 70895627240 99945542792 117582991520 120522566308 124931928490 141791254480 150653207885 199891085584 241045132616 249863856980 283582508960 301306415770 399782171168 482090265232 499727713960 512220906809 602612831540 964180530464 999455427920 1024441813618 1205225663080 1998910855840 2048883627236 2410451326160 2561104534045 4097767254472 4820902652320 5122209068090 8195534508944 10244418136180 16391069017888 20488836272360 40977672544720 81955345089440
• Sum of all divisors σ(n): 210776523109488
• Sum of proper divisors (its aliquot sum) s(n): 128821178020048
• 81955345089440 is an abundant number, because the sum of its proper divisors (128821178020048) is greater than itself. Its abundance is 46865832930608

Bases of 81955345089440

• Binary: 10010101000100110110111001110110100001110100000₂
• Hexadecimal: 0x4A89B73B43A0
• Base-36: T1TRKFWRK

Squares and roots of 81955345089440

• 81955345089440 squared (81955345089440²) is 6716678588729197121599513600
• 81955345089440 cubed (81955345089440³) is 550467711594154194649634479476052496384000
• The square root of 81955345089440 is 9052919.1474043333
• The cube root of 81955345089440 is 43436.9271479731

Scales and comparisons

• 81,955,345,089,440 seconds is equal to 2,605,926 years, 24 weeks, 2 days, 19 hours, 57 minutes, 20 seconds.
• To count from 1 to 81,955,345,089,440 would take you about six million, five hundred fourteen thousand, eight hundred sixteen 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 81955345089440 cubic inches would be around 3619.7 feet tall.

Recreational maths with 81955345089440

• 81955345089440 backwards is 04498054355918
• The number of decimal digits it has is: 14
• The sum of 81955345089440's digits is 65
• More coming soon!