81909742113024

Names of 81909742113024

• Cardinal: 81909742113024 can be written as Eighty-one trillion, nine hundred nine billion, seven hundred forty-two million, one hundred thirteen thousand and twenty-four.

Scientific notation

• Scientific notation: 8.1909742113024 × 10¹³

Factors of 81909742113024

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 15236187161

Divisors of 81909742113024

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 672 768 896 1344 1792 2688 5376 15236187149 30472374298 45708561447 60944748596 91417122894 106653310043 121889497192 182834245788 213306620086 243778994384 319959930129 365668491576 426613240172 487557988768 639919860258 731336983152 853226480344 975115977536 1279839720516 1462673966304 1706452960688 1950231955072 2559679441032 2925347932608 3412905921376 3900463910144 5119358882064 5850695865216 6825811842752 10238717764128 11701391730432 13651623685504 20477435528256 27303247371008 40954871056512 81909742113024
• Sum of all divisors σ(n): 249142132276800
• Sum of proper divisors (its aliquot sum) s(n): 167232390163776
• 81909742113024 is an abundant number, because the sum of its proper divisors (167232390163776) is greater than itself. Its abundance is 85322648050752

Bases of 81909742113024

• Binary: 10010100111111100011001000101010001000100000000₂
• Hexadecimal: 0x4A7F19151100
• Base-36: T18TDLUYO

Squares and roots of 81909742113024

• 81909742113024 squared (81909742113024²) is 6709205853022097372390424576
• 81909742113024 cubed (81909742113024³) is 549549321204231198403347133707674739277824
• The square root of 81909742113024 is 9050400.1078971089
• The cube root of 81909742113024 is 43428.8690171201

Scales and comparisons

• 81,909,742,113,024 seconds is equal to 2,604,476 years, 22 weeks, 4 days, 14 hours, 30 minutes, 24 seconds.
• To count from 1 to 81,909,742,113,024 would take you about six million, five hundred eleven thousand, one hundred ninety-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 81909742113024 cubic inches would be around 3619.1 feet tall.

Recreational maths with 81909742113024

• 81909742113024 backwards is 42031124790918
• The number of decimal digits it has is: 14
• The sum of 81909742113024's digits is 51
• More coming soon!