81844971312

Names of 81844971312

• Cardinal: 81844971312 can be written as Eighty-one billion, eight hundred forty-four million, nine hundred seventy-one thousand, three hundred twelve.

Scientific notation

• Scientific notation: 8.1844971312 × 10¹⁰

Factors of 81844971312

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1957724

Divisors of 81844971312

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 12 13 16 24 26 39 48 52 67 78 104 134 156 201 208 268 312 402 536 624 804 871 1072 1608 1742 2613 3216 3484 5226 6968 10452 13936 20904 41808 1957639 3915278 5872917 7830556 11745834 15661112 23491668 25449307 31322224 46983336 50898614 76347921 93966672 101797228 131161813 152695842 203594456 262323626 305391684 393485439 407188912 524647252 610783368 786970878 1049294504 1221566736 1573941756 1705103569 2098589008 3147883512 3410207138 5115310707 6295767024 6820414276 10230621414 13640828552 20461242828 27281657104 40922485656 81844971312
• Sum of all divisors σ(n): 231095486720
• Sum of proper divisors (its aliquot sum) s(n): 149250515408
• 81844971312 is an abundant number, because the sum of its proper divisors (149250515408) is greater than itself. Its abundance is 67405544096

Bases of 81844971312

• Binary: 1001100001110010101110010011100110000₂
• Hexadecimal: 0x130E572730
• Base-36: 11LKDS1C

Squares and roots of 81844971312

• 81844971312 squared (81844971312²) is 6698599329062103001344
• 81844971312 cubed (81844971312³) is 548246669917670268011388777443328
• The square root of 81844971312 is 286085.6013713379
• The cube root of 81844971312 is 4341.7418753557

Scales and comparisons

• 81,844,971,312 seconds is equal to 2,602 years, 21 weeks, 4 days, 18 hours, 15 minutes, 12 seconds.
• To count from 1 to 81,844,971,312 would take you about five thousand, two hundred four 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 81844971312 cubic inches would be around 361.8 feet tall.

Recreational maths with 81844971312

• 81844971312 backwards is 21317944818
• 81844971312 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81844971312's digits is 48
• More coming soon!