168126749791

Names of 168126749791

• Cardinal: 168126749791 can be written as One hundred sixty-eight billion, one hundred twenty-six million, seven hundred forty-nine thousand, seven hundred ninety-one.

Scientific notation

• Scientific notation: 1.68126749791 × 10¹¹

Factors of 168126749791

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 12938

Divisors of 168126749791

• Number of divisors d(n): 72
• Complete list of divisors:
  1 7 11 13 49 77 91 121 143 169 539 637 847 1001 1183 1573 1859 2197 5929 7007 8281 11011 12907 13013 15379 20449 24167 77077 90349 91091 107653 141977 143143 167791 169169 265837 632443 993839 1002001 1174537 1184183 1561747 1845701 1860859 2181283 6956873 8221759 10932229 12919907 13026013 15268981 20302711 23994113 28356679 76525603 90439349 106882867 142118977 167958791 198496753 263935243 311923469 994832839 1175711537 1389477271 1847546701 2183464283 3431158159 12932826907 15284249981 24018107113 168126749791
• Sum of all divisors σ(n): 232896204240
• Sum of proper divisors (its aliquot sum) s(n): 64769454449
• 168126749791 is a deficient number, because the sum of its proper divisors (64769454449) is less than itself. Its deficiency is 103357295342

Bases of 168126749791

• Binary: 10011100100101001000101001110001011111₂
• Hexadecimal: 0x2725229C5F
• Base-36: 258IBQE7

Squares and roots of 168126749791

• 168126749791 squared (168126749791²) is 28266603995285518543681
• 168126749791 cubed (168126749791³) is 4752372257356649319799146191120671
• The square root of 168126749791 is 410032.6203986701
• The cube root of 168126749791 is 5519.2356748103

Scales and comparisons

• 168,126,749,791 seconds is equal to 5,345 years, 47 weeks, 2 days, 10 hours, 56 minutes, 31 seconds.
• To count from 1 to 168,126,749,791 would take you about ten thousand, six hundred ninety-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 168126749791 cubic inches would be around 459.9 feet tall.

Recreational maths with 168126749791

• 168126749791 backwards is 197947621861
• The number of decimal digits it has is: 12
• The sum of 168126749791's digits is 61
• More coming soon!