81440991598144

Names of 81440991598144

• Cardinal: 81440991598144 can be written as Eighty-one trillion, four hundred forty billion, nine hundred ninety-one million, five hundred ninety-eight thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 8.1440991598144 × 10¹³

Factors of 81440991598144

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 62874

Divisors of 81440991598144

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 8 16 32 64 67 134 181 268 362 536 724 1072 1448 1723 2144 2896 3446 4288 5792 6892 11584 12127 13784 24254 27568 48508 55136 60901 97016 110272 115441 121802 194032 230882 243604 311863 388064 461764 487208 623726 776128 923528 974416 1247452 1847056 1948832 2494904 3694112 3897664 4080367 4989808 7388224 8160734 9979616 11023081 16321468 19959232 20894821 22046162 32642936 41789642 44092324 65285872 83579284 88184648 104932423 130571744 167158568 176369296 209864846 261143488 334317136 352738592 419729692 668634272 705477184 738546427 839459384 1337268544 1477092854 1678918768 2954185708 3357837536 5908371416 6715675072 7030472341 11816742832 14060944682 18992768563 23633485664 28121889364 37985537126 47266971328 56243778728 75971074252 112487557456 151942148504 224975114912 303884297008 449950229824 607768594016 1215537188032 1272515493721 2545030987442 5090061974884 10180123949768 20360247899536 40720495799072 81440991598144
• Sum of all divisors σ(n): 165026176684096
• Sum of proper divisors (its aliquot sum) s(n): 83585185085952
• 81440991598144 is an abundant number, because the sum of its proper divisors (83585185085952) is greater than itself. Its abundance is 2144193487808

Bases of 81440991598144

• Binary: 10010100001000111110101010111111101011001000000₂
• Hexadecimal: 0x4A11F55FD640
• Base-36: SV9H3NIV4

Squares and roots of 81440991598144

• 81440991598144 squared (81440991598144²) is 6632635112488961599184244736
• 81440991598144 cubed (81440991598144³) is 540168380469768405923107129668834259369984
• The square root of 81440991598144 is 9024466.2777442967
• The cube root of 81440991598144 is 43345.8660209543

Scales and comparisons

• 81,440,991,598,144 seconds is equal to 2,589,571 years, 32 weeks, 1 day, 10 hours, 9 minutes, 4 seconds.
• To count from 1 to 81,440,991,598,144 would take you about six million, four hundred seventy-three thousand, nine hundred twenty-nine 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 81440991598144 cubic inches would be around 3612.2 feet tall.

Recreational maths with 81440991598144

• 81440991598144 backwards is 44189519904418
• 81440991598144 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81440991598144's digits is 67
• More coming soon!