155380960891

Names of 155380960891

• Cardinal: 155380960891 can be written as One hundred fifty-five billion, three hundred eighty million, nine hundred sixty thousand, eight hundred ninety-one.

Scientific notation

• Scientific notation: 1.55380960891 × 10¹¹

Factors of 155380960891

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1964

Divisors of 155380960891

• Number of divisors d(n): 64
• Complete list of divisors:
  1 13 17 31 107 127 221 403 527 1391 1651 1669 1819 2159 3317 3937 6851 13589 21697 23647 28067 28373 43121 51181 51739 56389 66929 176657 178583 211963 231013 368849 421259 672607 733057 870077 879563 2321579 2755519 3003169 3035911 3603371 5476367 5536073 6570853 7161403 11434319 22680041 39466843 46843823 71968949 85421089 93098239 94113241 111704501 294840533 385560697 703081271 1223472133 1452158513 5012289061 9140056523 11952381607 155380960891
• Sum of all divisors σ(n): 186166149120
• Sum of proper divisors (its aliquot sum) s(n): 30785188229
• 155380960891 is a deficient number, because the sum of its proper divisors (30785188229) is less than itself. Its deficiency is 124595772662

Bases of 155380960891

• Binary: 10010000101101011011010100111001111011₂
• Hexadecimal: 0x242D6D4E7B
• Base-36: 1ZDPT8QJ

Squares and roots of 155380960891

• 155380960891 squared (155380960891²) is 24143243007410471513881
• 155380960891 cubed (155380960891³) is 3751400297516355697482213224627971
• The square root of 155380960891 is 394183.9175955813
• The cube root of 155380960891 is 5376.0826189603

Scales and comparisons

• 155,380,960,891 seconds is equal to 4,940 years, 32 weeks, 6 days, 18 hours, 1 minute, 31 seconds.
• To count from 1 to 155,380,960,891 would take you about nine thousand, eight hundred eighty-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 155380960891 cubic inches would be around 448 feet tall.

Recreational maths with 155380960891

• 155380960891 backwards is 198069083551
• The number of decimal digits it has is: 12
• The sum of 155380960891's digits is 55
• More coming soon!