165120309081

Names of 165120309081

• Cardinal: 165120309081 can be written as One hundred sixty-five billion, one hundred twenty million, three hundred nine thousand and eighty-one.

Scientific notation

• Scientific notation: 1.65120309081 × 10¹¹

Factors of 165120309081

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 204

Divisors of 165120309081

• Number of divisors d(n): 112
• Complete list of divisors:
  1 3 7 9 13 21 27 39 63 91 117 169 181 189 273 351 507 543 819 1183 1267 1521 1629 2197 2353 2457 3549 3801 4563 4887 6591 7059 10647 11403 15379 16471 19773 21177 28561 30589 31941 34209 46137 49413 59319 63531 85683 91767 138411 148239 199927 214123 257049 275301 371293 397657 415233 444717 599781 642369 771147 825903 1113879 1192971 1799343 1927107 2599051 2783599 3341637 3578913 4826809 5169541 5398029 5781321 7797153 8350797 10024911 10736739 14480427 15508623 23391459 25052391 33787663 36186787 43441281 46525869 67204033 70174377 75157173 101362989 108560361 130323843 139577607 201612099 304088967 325681083 470428231 604836297 873652429 912266901 977043249 1411284693 1814508891 2620957287 4233854079 6115567003 7862871861 12701562237 18346701009 23588615583 55040103027 165120309081
• Sum of all divisors σ(n): 304539464320
• Sum of proper divisors (its aliquot sum) s(n): 139419155239
• 165120309081 is a deficient number, because the sum of its proper divisors (139419155239) is less than itself. Its deficiency is 25701153842

Bases of 165120309081

• Binary: 10011001110001111011111111011101011001₂
• Hexadecimal: 0x2671EFF759
• Base-36: 23USD9W9

Squares and roots of 165120309081

• 165120309081 squared (165120309081²) is 27264716471004971064561
• 165120309081 cubed (165120309081³) is 4501958410698172396867773925578441
• The square root of 165120309081 is 406349.9834883717
• The cube root of 165120309081 is 5486.1393033815

Scales and comparisons

• 165,120,309,081 seconds is equal to 5,250 years, 16 weeks, 2 days, 16 hours, 31 minutes, 21 seconds.
• To count from 1 to 165,120,309,081 would take you about ten thousand, five hundred 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 165120309081 cubic inches would be around 457.2 feet tall.

Recreational maths with 165120309081

• 165120309081 backwards is 180903021561
• The number of decimal digits it has is: 12
• The sum of 165120309081's digits is 36
• More coming soon!