640398617556138

Names of 640398617556138

• Cardinal: 640398617556138 can be written as Six hundred forty trillion, three hundred ninety-eight billion, six hundred seventeen million, five hundred fifty-six thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 6.40398617556138 × 10¹⁴

Factors of 640398617556138

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2274722

Divisors of 640398617556138

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 42 49 54 63 81 98 126 147 162 189 294 378 441 567 882 1134 1323 2646 3969 7938 36037 72074 108111 216222 252259 324333 504518 648666 756777 972999 1513554 1765813 1945998 2238673 2270331 2918997 3531626 4477346 4540662 5297439 5837994 6716019 6810993 10594878 13432038 13621986 15670711 15892317 20148057 20432979 31341422 31784634 40296114 40865958 47012133 47676951 60444171 94024266 95353902 109694977 120888342 141036399 143030853 181332513 219389954 282072798 286061706 329084931 362665026 423109197 658169862 846218394 987254793 1269327591 1974509586 2538655182 2961764379 5923528758 8885293137 17770586274 80675058901 161350117802 242025176703 484050353406 564725412307 726075530109 1129450824614 1452151060218 1694176236921 2178226590327 3388352473842 3953077886149 4356453180654 5082528710763 6534679770981 7906155772298 10165057421526 11859233658447 13069359541962 15247586132289 23718467316894 30495172264578 35577700975341 45742758396867 71155401950682 91485516793734 106733102926023 213466205852046 320199308778069 640398617556138
• Sum of all divisors σ(n): 1669294709765892
• Sum of proper divisors (its aliquot sum) s(n): 1028896092209754
• 640398617556138 is an abundant number, because the sum of its proper divisors (1028896092209754) is greater than itself. Its abundance is 388497474653616

Bases of 640398617556138

• Binary: 10010001100111000001101100000111010011010010101010₂
• Hexadecimal: 0x246706C1D34AA
• Base-36: 6B032AAGMI

Squares and roots of 640398617556138

• 640398617556138 squared (640398617556138²) is 410110389367812701431581475044
• 640398617556138 cubed (640398617556138³) is 262634126396556730034055316889754472516020072
• The square root of 640398617556138 is 25306098.4261924105
• The cube root of 640398617556138 is 86195.2754607607

Scales and comparisons

• 640,398,617,556,138 seconds is equal to 20,362,695 years, 8 weeks, 12 hours, 42 minutes, 18 seconds.
• To count from 1 to 640,398,617,556,138 would take you about fifty million, nine hundred six thousand, seven hundred thirty-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 640398617556138 cubic inches would be around 7182.9 feet tall.

Recreational maths with 640398617556138

• 640398617556138 backwards is 831655716893046
• The number of decimal digits it has is: 15
• The sum of 640398617556138's digits is 72
• More coming soon!