18118591255921

Names of 18118591255921

• Cardinal: 18118591255921 can be written as Eighteen trillion, one hundred eighteen billion, five hundred ninety-one million, two hundred fifty-five thousand, nine hundred twenty-one.

Scientific notation

• Scientific notation: 1.8118591255921 × 10¹³

Factors of 18118591255921

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 5462

Divisors of 18118591255921

• Number of divisors d(n): 64
• Complete list of divisors:
  1 13 43 67 281 367 559 871 2881 3653 4691 4771 12083 15781 18827 24589 37453 60983 103127 157079 201713 205153 244751 314297 319657 809561 1057327 1318171 1340651 1721597 2622269 4085861 4434461 6909509 10524293 13514771 13745251 17136223 22380761 56681353 57647993 74028671 88317457 89823617 115346999 175692023 297108887 483768757 736857589 962372723 1148126941 1499510987 3797650651 3862415531 4959920957 6288993841 20802056551 32412506719 49369458463 64478972441 270426735163 421362587347 1393737788917 18118591255921
• Sum of all divisors σ(n): 20395978960896
• Sum of proper divisors (its aliquot sum) s(n): 2277387704975
• 18118591255921 is a deficient number, because the sum of its proper divisors (2277387704975) is less than itself. Its deficiency is 15841203550946

Bases of 18118591255921

• Binary: 100000111101010010000001100100001010101110001₂
• Hexadecimal: 0x107A90321571
• Base-36: 6F7KDFBLD

Squares and roots of 18118591255921

• 18118591255921 squared (18118591255921²) is 328283349099136920117558241
• 18118591255921 cubed (18118591255921³) is 5948031818452083293409929420764053594961
• The square root of 18118591255921 is 4256593.8561155913
• The cube root of 18118591255921 is 26264.8430066729

Scales and comparisons

• 18,118,591,255,921 seconds is equal to 576,115 years, 8 weeks, 1 day, 7 hours, 32 minutes, 1 second.
• To count from 1 to 18,118,591,255,921 would take you about one million, four hundred forty thousand, two hundred eighty-seven 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 18118591255921 cubic inches would be around 2188.7 feet tall.

Recreational maths with 18118591255921

• 18118591255921 backwards is 12955219581181
• The number of decimal digits it has is: 14
• The sum of 18118591255921's digits is 58
• More coming soon!