81001312308

Names of 81001312308

• Cardinal: 81001312308 can be written as Eighty-one billion, one million, three hundred twelve thousand, three hundred eight.

Scientific notation

• Scientific notation: 8.1001312308 × 10¹⁰

Factors of 81001312308

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 21226

Divisors of 81001312308

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 84 108 126 189 252 378 756 8291 12923 16582 24873 25846 33164 38769 49746 51692 58037 74619 77538 90461 99492 116074 116307 149238 155076 174111 180922 223857 232148 232614 271383 298476 348222 348921 361844 447714 465228 522333 542766 696444 697842 814149 895428 1044666 1085532 1395684 1566999 1628298 2089332 2442447 3133998 3256596 4884894 6267996 9769788 107144593 214289186 321433779 428578372 642867558 750012151 964301337 1285735116 1500024302 1928602674 2250036453 2892904011 3000048604 3857205348 4500072906 5785808022 6750109359 9000145812 11571616044 13500218718 20250328077 27000437436 40500656154 81001312308
• Sum of all divisors σ(n): 240051409920
• Sum of proper divisors (its aliquot sum) s(n): 159050097612
• 81001312308 is an abundant number, because the sum of its proper divisors (159050097612) is greater than itself. Its abundance is 78048785304

Bases of 81001312308

• Binary: 1001011011100000011011111000000110100₂
• Hexadecimal: 0x12DC0DF034
• Base-36: 117M38L0

Squares and roots of 81001312308

• 81001312308 squared (81001312308²) is 6561212595618152286864
• 81001312308 cubed (81001312308³) is 531466830576849265702175269922112
• The square root of 81001312308 is 284607.2948959671
• The cube root of 81001312308 is 4326.7720771621

Scales and comparisons

• 81,001,312,308 seconds is equal to 2,575 years, 30 weeks, 5 days, 4 hours, 31 minutes, 48 seconds.
• To count from 1 to 81,001,312,308 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 81001312308 cubic inches would be around 360.6 feet tall.

Recreational maths with 81001312308

• 81001312308 backwards is 80321310018
• 81001312308 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81001312308's digits is 27
• More coming soon!