18121045100785

Names of 18121045100785

• Cardinal: 18121045100785 can be written as Eighteen trillion, one hundred twenty-one billion, forty-five million, one hundred thousand, seven hundred eighty-five.

Scientific notation

• Scientific notation: 1.8121045100785 × 10¹³

Factors of 18121045100785

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2011

Divisors of 18121045100785

• Number of divisors d(n): 128
• Complete list of divisors:
  1 5 11 29 55 71 145 281 319 355 521 781 1093 1405 1595 2059 2605 3091 3905 5465 5731 8149 10295 12023 15109 15455 19951 22649 28655 31697 36991 40745 60115 75545 77603 89639 99755 113245 146401 158485 166199 184955 219461 307133 348667 388015 406901 448195 569453 578579 732005 830995 853633 1072739 1097305 1535665 1610411 1743335 2034505 2250487 2847265 2892895 3378463 4245629 4268165 5363695 6263983 6364369 8052055 8906857 10394471 11252435 11800129 16514137 16892315 21228145 21806443 24755357 31319915 31821845 40431163 44534285 46701919 51972355 59000645 82570685 97975427 109032215 114339181 123776785 160016293 181655507 202155815 233509595 239870873 301439659 444742793 489877135 571695905 632386847 800081465 908277535 1172503727 1199354365 1507198295 1760179223 2223713965 3161934235 3315836249 4640472497 5862518635 6956255317 8800896115 11361156803 12897540997 16579181245 23202362485 34781276585 51045197467 56805784015 64487704985 124972724833 255225987335 329473547287 624863624165 1647367736435 3624209020157 18121045100785
• Sum of all divisors σ(n): 25045123691520
• Sum of proper divisors (its aliquot sum) s(n): 6924078590735
• 18121045100785 is a deficient number, because the sum of its proper divisors (6924078590735) is less than itself. Its deficiency is 11196966510050

Bases of 18121045100785

• Binary: 100000111101100100010011101001100100011110001₂
• Hexadecimal: 0x107B2274C8F1
• Base-36: 6F8OYDQEP

Squares and roots of 18121045100785

• 18121045100785 squared (18121045100785²) is 328372275544684050807616225
• 18121045100785 cubed (18121045100785³) is 5950448814992618986238082016600726236625
• The square root of 18121045100785 is 4256882.0867842933
• The cube root of 18121045100785 is 26266.0286569973

Scales and comparisons

• 18,121,045,100,785 seconds is equal to 576,193 years, 9 weeks, 3 days, 7 hours, 6 minutes, 25 seconds.
• To count from 1 to 18,121,045,100,785 would take you about one million, four hundred forty thousand, four hundred eighty-two 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 18121045100785 cubic inches would be around 2188.8 feet tall.

Recreational maths with 18121045100785

• 18121045100785 backwards is 58700154012181
• The number of decimal digits it has is: 14
• The sum of 18121045100785's digits is 43
• More coming soon!