640243576368

Names of 640243576368

• Cardinal: 640243576368 can be written as Six hundred forty billion, two hundred forty-three million, five hundred seventy-six thousand, three hundred sixty-eight.

Scientific notation

• Scientific notation: 6.40243576368 × 10¹¹

Factors of 640243576368

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2233314

Divisors of 640243576368

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 33 36 44 48 66 72 88 99 132 144 176 181 198 264 362 396 528 543 724 792 1086 1448 1584 1629 1991 2172 2896 3258 3982 4344 5973 6516 7964 8688 11946 13032 15928 17919 23892 26064 31856 35838 47784 71676 95568 143352 286704 2233117 4466234 6699351 8932468 13398702 17864936 20098053 24564287 26797404 35729872 40196106 49128574 53594808 73692861 80392212 98257148 107189616 147385722 160784424 196514296 221078583 294771444 321568848 393028592 404194177 442157166 589542888 808388354 884314332 1179085776 1212582531 1616776708 1768628664 2425165062 3233553416 3537257328 3637747593 4446135947 4850330124 6467106832 7275495186 8892271894 9700660248 13338407841 14550990372 17784543788 19401320496 26676815682 29101980744 35569087576 40015223523 53353631364 58203961488 71138175152 80030447046 106707262728 160060894092 213414525456 320121788184 640243576368
• Sum of all divisors σ(n): 1965483273936
• Sum of proper divisors (its aliquot sum) s(n): 1325239697568
• 640243576368 is an abundant number, because the sum of its proper divisors (1325239697568) is greater than itself. Its abundance is 684996121200

Bases of 640243576368

• Binary: 1001010100010001011111011010111000110000₂
• Hexadecimal: 0x95117DAE30
• Base-36: 864GHT80

Squares and roots of 640243576368

• 640243576368 squared (640243576368²) is 409911837080487048071424
• 640243576368 cubed (640243576368³) is 262443420567987983524551638862508032
• The square root of 640243576368 is 800152.2207480275
• The cube root of 640243576368 is 8618.8318909969

Scales and comparisons

• 640,243,576,368 seconds is equal to 20,357 years, 39 weeks, 5 days, 13 hours, 52 minutes, 48 seconds.
• To count from 1 to 640,243,576,368 would take you about forty thousand, seven hundred fifteen 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 640243576368 cubic inches would be around 718.2 feet tall.

Recreational maths with 640243576368

• 640243576368 backwards is 863675342046
• The number of decimal digits it has is: 12
• The sum of 640243576368's digits is 54
• More coming soon!