81990818799150

Names of 81990818799150

• Cardinal: 81990818799150 can be written as Eighty-one trillion, nine hundred ninety billion, eight hundred eighteen million, seven hundred ninety-nine thousand, one hundred fifty.

Scientific notation

• Scientific notation: 8.199081879915 × 10¹³

Factors of 81990818799150

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 399802

Divisors of 81990818799150

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 5 6 10 15 25 30 50 75 150 1171 2342 3513 5855 7026 11710 17565 29275 35130 58550 87825 175650 398621 797242 1195863 1371241 1993105 2391726 2742482 3986210 4113723 5979315 6856205 8227446 9965525 11958630 13712410 19931050 20568615 29896575 34281025 41137230 59793150 68562050 102843075 205686150 466785191 933570382 1400355573 2333925955 2800711146 4667851910 7001777865 11669629775 14003555730 23339259550 35008889325 70017778650 546605458661 1093210917322 1639816375983 2733027293305 3279632751966 5466054586610 8199081879915 13665136466525 16398163759830 27330272933050 40995409399575 81990818799150
• Sum of all divisors σ(n): 203511533537592
• Sum of proper divisors (its aliquot sum) s(n): 121520714738442
• 81990818799150 is an abundant number, because the sum of its proper divisors (121520714738442) is greater than itself. Its abundance is 39529895939292

Bases of 81990818799150

• Binary: 10010101001000111111001101000010001111000101110₂
• Hexadecimal: 0x4A91F9A11E2E
• Base-36: T2A28KMCU

Squares and roots of 81990818799150

• 81990818799150 squared (81990818799150²) is 6722494367355049048040722500
• 81990818799150 cubed (81990818799150³) is 551182817552114341550767581827748385875000
• The square root of 81990818799150 is 9054878.1769358995
• The cube root of 81990818799150 is 43443.1933517559

Scales and comparisons

• 81,990,818,799,150 seconds is equal to 2,607,054 years, 22 weeks, 4 hours, 12 minutes, 30 seconds.
• To count from 1 to 81,990,818,799,150 would take you about six million, five hundred seventeen thousand, six hundred thirty-six 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 81990818799150 cubic inches would be around 3620.3 feet tall.

Recreational maths with 81990818799150

• 81990818799150 backwards is 05199781809918
• 81990818799150 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81990818799150's digits is 75
• More coming soon!