81829639744

Names of 81829639744

• Cardinal: 81829639744 can be written as Eighty-one billion, eight hundred twenty-nine million, six hundred thirty-nine thousand, seven hundred forty-four.

Scientific notation

• Scientific notation: 8.1829639744 × 10¹⁰

Factors of 81829639744

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1434

Divisors of 81829639744

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 8 16 32 61 64 122 127 151 244 254 302 488 508 604 976 1016 1093 1208 1952 2032 2186 2416 3904 4064 4372 4832 7747 8128 8744 9211 9664 15494 17488 18422 19177 30988 34976 36844 38354 61976 66673 69952 73688 76708 123952 133346 138811 147376 153416 165043 247904 266692 277622 294752 306832 330086 495808 533384 555244 589504 613664 660172 1066768 1110488 1169797 1227328 1320344 2133536 2220976 2339594 2640688 4267072 4441952 4679188 5281376 8467471 8883904 9358376 10067623 10562752 16934942 18716752 20135246 20960461 33869884 37433504 40270492 41920922 67739768 74867008 80540984 83841844 135479536 161081968 167683688 270959072 322163936 335367376 541918144 644327872 670734752 1278588121 1341469504 2557176242 5114352484 10228704968 20457409936 40914819872 81829639744
• Sum of all divisors σ(n): 167597019136
• Sum of proper divisors (its aliquot sum) s(n): 85767379392
• 81829639744 is an abundant number, because the sum of its proper divisors (85767379392) is greater than itself. Its abundance is 3937739648

Bases of 81829639744

• Binary: 1001100001101011011010011011001000000₂
• Hexadecimal: 0x130D6D3640
• Base-36: 11LB964G

Squares and roots of 81829639744

• 81829639744 squared (81829639744²) is 6696089940632824385536
• 81829639744 cubed (81829639744³) is 547938627535406366849629044342784
• The square root of 81829639744 is 286058.8046958177
• The cube root of 81829639744 is 4341.4707535561

Scales and comparisons

• 81,829,639,744 seconds is equal to 2,601 years, 48 weeks, 2 days, 7 hours, 29 minutes, 4 seconds.
• To count from 1 to 81,829,639,744 would take you about five thousand, two hundred three 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 81829639744 cubic inches would be around 361.8 feet tall.

Recreational maths with 81829639744

• 81829639744 backwards is 44793692818
• 81829639744 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81829639744's digits is 61
• More coming soon!