81001429824

Names of 81001429824

• Cardinal: 81001429824 can be written as Eighty-one billion, one million, four hundred twenty-nine thousand, eight hundred twenty-four.

Scientific notation

• Scientific notation: 8.1001429824 × 10¹⁰

Factors of 81001429824

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 60268933

Divisors of 81001429824

• Number of divisors d(n): 56
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 168 192 224 336 448 672 1344 60268921 120537842 180806763 241075684 361613526 421882447 482151368 723227052 843764894 964302736 1265647341 1446454104 1687529788 1928605472 2531294682 2892908208 3375059576 3857210944 5062589364 5785816416 6750119152 10125178728 11571632832 13500238304 20250357456 27000476608 40500714912 81001429824
• Sum of all divisors σ(n): 244932899008
• Sum of proper divisors (its aliquot sum) s(n): 163931469184
• 81001429824 is an abundant number, because the sum of its proper divisors (163931469184) is greater than itself. Its abundance is 82930039360

Bases of 81001429824

• Binary: 1001011011100000011111011101101000000₂
• Hexadecimal: 0x12DC0FBB40
• Base-36: 117M5R9C

Squares and roots of 81001429824

• 81001429824 squared (81001429824²) is 6561231633532396670976
• 81001429824 cubed (81001429824³) is 531469143722583314174593681588224
• The square root of 81001429824 is 284607.5013487873
• The cube root of 81001429824 is 4326.7741695755

Scales and comparisons

• 81,001,429,824 seconds is equal to 2,575 years, 30 weeks, 6 days, 13 hours, 10 minutes, 24 seconds.
• To count from 1 to 81,001,429,824 would take you about five thousand, one hundred fifty-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 81001429824 cubic inches would be around 360.6 feet tall.

Recreational maths with 81001429824

• 81001429824 backwards is 42892410018
• The number of decimal digits it has is: 11
• The sum of 81001429824's digits is 39
• More coming soon!