991213665472

Names of 991213665472

• Cardinal: 991213665472 can be written as Nine hundred ninety-one billion, two hundred thirteen million, six hundred sixty-five thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 9.91213665472 × 10¹¹

Factors of 991213665472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 460904

Divisors of 991213665472

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 8 16 19 29 32 38 58 61 64 76 116 122 152 232 244 304 464 488 551 608 928 976 1102 1159 1216 1769 1856 1952 2204 2318 3538 3904 4408 4636 7076 8816 9272 14152 17632 18544 28304 33611 35264 37088 56608 67222 74176 113216 134444 268888 460793 537776 921586 1075552 1843172 2151104 3686344 7372688 8755067 13362997 14745376 17510134 26725994 28108373 29490752 35020268 53451988 56216746 70040536 106903976 112433492 140081072 213807952 224866984 253896943 280162144 427615904 449733968 507793886 534059087 560324288 815142817 855231808 899467936 1015587772 1068118174 1630285634 1798935872 2031175544 2136236348 3260571268 4062351088 4272472696 6521142536 8124702176 8544945392 13042285072 15487713523 16249404352 17089890784 26084570144 30975427046 34179781568 52169140288 61950854092 123901708184 247803416368 495606832736 991213665472
• Sum of all divisors σ(n): 2176975173600
• Sum of proper divisors (its aliquot sum) s(n): 1185761508128
• 991213665472 is an abundant number, because the sum of its proper divisors (1185761508128) is greater than itself. Its abundance is 194547842656

Bases of 991213665472

• Binary: 1110011011001000111100000011110011000000₂
• Hexadecimal: 0xE6C8F03CC0
• Base-36: CNCV0V5S

Squares and roots of 991213665472

• 991213665472 squared (991213665472²) is 982504530618437924982784
• 991213665472 cubed (991213665472³) is 973871917137148710649083091135234048
• The square root of 991213665472 is 995597.1401485643
• The cube root of 991213665472 is 9970.6260196505

Scales and comparisons

• 991,213,665,472 seconds is equal to 31,517 years, 27 weeks, 3 days, 9 hours, 17 minutes, 52 seconds.
• To count from 1 to 991,213,665,472 would take you about sixty-three thousand and thirty-five 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 991213665472 cubic inches would be around 830.9 feet tall.

Recreational maths with 991213665472

• 991213665472 backwards is 274566312199
• The number of decimal digits it has is: 12
• The sum of 991213665472's digits is 55
• More coming soon!