168461997537735729

Names of 168461997537735729

• Cardinal: 168461997537735729 can be written as One hundred sixty-eight quadrillion, four hundred sixty-one trillion, nine hundred ninety-seven billion, five hundred thirty-seven million, seven hundred thirty-five thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 1.68461997537735729 × 10¹⁷

Factors of 168461997537735729

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 28561

Divisors of 168461997537735729

• Number of divisors d(n): 18
• Complete list of divisors:
  1 3 9 6089 18267 22469 54801 67407 202221 136813741 410441223 504855961 1231323669 1514567883 4543703649 3074067946529 9222203839587 27666611518761
• Sum of all divisors σ(n): 168474302151599238
• Sum of proper divisors (its aliquot sum) s(n): 12304613863509
• 168461997537735729 is a deficient number, because the sum of its proper divisors (12304613863509) is less than itself. Its deficiency is 168449692923872220

Bases of 168461997537735729

• Binary: 1001010110011111110100101101010001011000111011010000110001₂
• Hexadecimal: 0x2567F4B5163B431
• Base-36: 1A2QSLA633U9

Squares and roots of 168461997537735729

• 168461997537735729 squared (168461997537735729²) is 28379444614404078820341340243161441
• 168461997537735729 cubed (168461997537735729³) is 4780857928754047421361807624049152568751131740825489
• 168461997537735729 is a perfect square number. Its square root is 410441223
• The cube root of 168461997537735729 is 552290.1724056371

Scales and comparisons

• 168,461,997,537,735,729 seconds is equal to 5,356,570,434 years, 27 weeks, 3 days, 5 hours, 42 minutes, 9 seconds.
• To count from 1 to 168,461,997,537,735,729 would take you about sixteen billion, sixty-nine million, seven hundred eleven thousand, three hundred three 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 168461997537735729 cubic inches would be around 46024.2 feet tall.

Recreational maths with 168461997537735729

• 168461997537735729 backwards is 927537735799164861
• The number of decimal digits it has is: 18
• The sum of 168461997537735729's digits is 99
• More coming soon!