81728101820727822

Names of 81728101820727822

• Cardinal: 81728101820727822 can be written as Eighty-one quadrillion, seven hundred twenty-eight trillion, one hundred one billion, eight hundred twenty million, seven hundred twenty-seven thousand, eight hundred twenty-two.

Scientific notation

• Scientific notation: 8.1728101820727822 × 10¹⁶

Factors of 81728101820727822

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 237825107

Divisors of 81728101820727822

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 96134393 141690709 192268786 283381418 288403179 425072127 576806358 850144254 13621350303454637 27242700606909274 40864050910363911 81728101820727822
• Sum of all divisors σ(n): 163456206495356880
• Sum of proper divisors (its aliquot sum) s(n): 81728104674629058
• 81728101820727822 is an abundant number, because the sum of its proper divisors (81728104674629058) is greater than itself. Its abundance is 2853901236

Bases of 81728101820727822

• Binary: 100100010010110110100011010001101001100010000001000001110₂
• Hexadecimal: 0x1225B468D31020E
• Base-36: MCQ6ZNN064U

Squares and roots of 81728101820727822

• 81728101820727822 squared (81728101820727822²) is 6679482627219254333446201804863684
• 81728101820727822 cubed (81728101820727822³) is 545901436267157796033075384727644418662324376216248
• The square root of 81728101820727822 is 285881272.2455387109
• The cube root of 81728101820727822 is 433967.4312466821

Scales and comparisons

• 81,728,101,820,727,822 seconds is equal to 2,598,700,836 years, 14 weeks, 4 days, 13 hours, 43 minutes, 42 seconds.
• To count from 1 to 81,728,101,820,727,822 would take you about seven billion, seven hundred ninety-six million, one hundred two thousand, five hundred eight 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 81728101820727822 cubic inches would be around 36164 feet tall.

Recreational maths with 81728101820727822

• 81728101820727822 backwards is 22872702810182718
• The number of decimal digits it has is: 17
• The sum of 81728101820727822's digits is 66
• More coming soon!