81188361799901

Names of 81188361799901

• Cardinal: 81188361799901 can be written as Eighty-one trillion, one hundred eighty-eight billion, three hundred sixty-one million, seven hundred ninety-nine thousand, nine hundred one.

Scientific notation

• Scientific notation: 8.1188361799901 × 10¹³

Factors of 81188361799901

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 115

Divisors of 81188361799901

• Number of divisors d(n): 64
• Complete list of divisors:
  1 19 43 53 361 817 1007 1849 2279 2809 6859 15523 19133 35131 43301 53371 79507 97997 120787 148877 294937 363527 667489 822719 1014049 1510633 1861943 2294953 2828663 4213871 5193841 6401711 12682291 15631661 19266931 28702027 35376917 43604107 53744597 80063549 98682979 121632509 223335163 275273573 545338513 672161423 828478033 1021147343 1521207431 1874976601 2311017671 4243368097 5230197887 11836763639 28902941189 35624555419 43909335749 80623993843 99373759853 224898509141 1531855883017 1888101437207 4273071673679 81188361799901
• Sum of all divisors σ(n): 89425844640000
• Sum of proper divisors (its aliquot sum) s(n): 8237482840099
• 81188361799901 is a deficient number, because the sum of its proper divisors (8237482840099) is less than itself. Its deficiency is 72950878959802

Bases of 81188361799901

• Binary: 10010011101011100100011011101110000100011011101₂
• Hexadecimal: 0x49D7237708DD
• Base-36: SS1F2E6ZH

Squares and roots of 81188361799901

• 81188361799901 squared (81188361799901²) is 6591550091751623944363609801
• 81188361799901 cubed (81188361799901³) is 535157153671301477073452412507122004429701
• The square root of 81188361799901 is 9010458.4677973517
• 81188361799901 is a perfect cube number. Its cube root is 43301

Scales and comparisons

• 81,188,361,799,901 seconds is equal to 2,581,538 years, 40 weeks, 1 day, 10 hours, 11 minutes, 41 seconds.
• To count from 1 to 81,188,361,799,901 would take you about six million, four hundred fifty-three thousand, eight hundred forty-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 81188361799901 cubic inches would be around 3608.4 feet tall.

Recreational maths with 81188361799901

• 81188361799901 backwards is 10999716388118
• The number of decimal digits it has is: 14
• The sum of 81188361799901's digits is 71
• More coming soon!