81820237485312

Names of 81820237485312

• Cardinal: 81820237485312 can be written as Eighty-one trillion, eight hundred twenty billion, two hundred thirty-seven million, four hundred eighty-five thousand, three hundred twelve.

Scientific notation

• Scientific notation: 8.1820237485312 × 10¹³

Factors of 81820237485312

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 767

Divisors of 81820237485312

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 96 128 144 192 199 256 288 384 398 563 576 597 768 796 1126 1152 1194 1592 1689 1791 2252 2304 2388 3184 3378 3582 4504 4776 5067 6368 6756 7164 9008 9552 10134 12736 13512 14328 18016 19104 20268 25472 27024 28656 36032 38208 40536 50944 54048 57312 72064 76416 81072 108096 112037 114624 144128 152832 162144 216192 224074 229248 316969 324288 336111 432384 448148 458496 633938 648576 672222 896296 950907 1008333 1267876 1297152 1344444 1792592 1901814 2016666 2535752 2688888 2852721 3585184 3803628 4033332 5071504 5377776 5705442 7170368 7607256 8066664 10143008 10755552 11410884 14340736 15214512 16133328 20286016 21511104 22821768 28681472 30429024 32266656 40572032 43022208 45643536 60858048 63076831 64533312 81144064 86044416 91287072 121716096 126153662 129066624 178453547 182574144 189230493 243432192 252307324 258133248 356907094 365148288 378460986 504614648 535360641 567691479 713814188 730296576 756921972 1009229296 1070721282 1135382958 1427628376 1513843944 1606081923 2018458592 2141442564 2270765916 2855256752 3027687888 3212163846 4036917184 4282885128 4541531832 5710513504 6055375776 6424327692 8073834368 8565770256 9083063664 11421027008 12110751552 12848655384 16147668736 17131540512 18166127328 22842054016 24221503104 25697310768 34263081024 35512255853 36332254656 45684108032 48443006208 51394621536 68526162048 71024511706 72664509312 102789243072 106536767559 137052324096 142049023412 145329018624 205578486144 213073535118 284098046824 319610302677 411156972288 426147070236 568196093648 639220605354 852294140472 1136392187296 1278441210708 1704588280944 2272784374592 2556882421416 3409176561888 4545568749184 5113764842832 6818353123776 9091137498368 10227529685664 13636706247552 20455059371328 27273412495104 40910118742656 81820237485312
• Sum of all divisors σ(n): 237515256888000
• Sum of proper divisors (its aliquot sum) s(n): 155695019402688
• 81820237485312 is an abundant number, because the sum of its proper divisors (155695019402688) is greater than itself. Its abundance is 73874781917376

Bases of 81820237485312

• Binary: 10010100110101001000010001100001101010100000000₂
• Hexadecimal: 0x4A6A4230D500
• Base-36: T03P4V280

Squares and roots of 81820237485312

• 81820237485312 squared (81820237485312²) is 6694551262152854953415737344
• 81820237485312 cubed (81820237485312³) is 547749774126941784653025932167928849891328
• The square root of 81820237485312 is 9045453.9678952543
• The cube root of 81820237485312 is 43413.0446827235

Scales and comparisons

• 81,820,237,485,312 seconds is equal to 2,601,630 years, 24 weeks, 1 day, 9 hours, 55 minutes, 12 seconds.
• To count from 1 to 81,820,237,485,312 would take you about six million, five hundred four thousand and seventy-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 81820237485312 cubic inches would be around 3617.8 feet tall.

Recreational maths with 81820237485312

• 81820237485312 backwards is 21358473202818
• The number of decimal digits it has is: 14
• The sum of 81820237485312's digits is 54
• More coming soon!