640521131800

Names of 640521131800

• Cardinal: 640521131800 can be written as Six hundred forty billion, five hundred twenty-one million, one hundred thirty-one thousand, eight hundred.

Scientific notation

• Scientific notation: 6.405211318 × 10¹¹

Factors of 640521131800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 282

Divisors of 640521131800

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 25 40 44 50 55 88 100 110 113 151 200 220 226 275 302 440 452 550 565 604 755 904 1100 1130 1208 1243 1510 1661 2200 2260 2486 2825 3020 3322 3775 4520 4972 5650 6040 6215 6644 7550 8305 9944 11300 12430 12769 13288 15100 16610 17063 22600 22801 24860 25538 30200 31075 33220 34126 41525 45602 49720 51076 62150 63845 66440 68252 83050 85315 91204 102152 114005 124300 127690 136504 140459 166100 170630 182408 187693 228010 248600 250811 255380 280918 319225 332200 341260 375386 426575 456020 501622 510760 561836 570025 638450 682520 702295 750772 853150 912040 938465 1003244 1123672 1140050 1254055 1276900 1404590 1501544 1706300 1876930 1928119 2006488 2280100 2508110 2553800 2576513 2809180 3412600 3511475 3753860 3856238 4560200 4692325 5016220 5153026 5618360 6270275 7022950 7507720 7712476 9384650 9640595 10032440 10306052 12540550 12882565 14045900 15424952 18769300 19281190 20612104 21209309 25081100 25765130 28091800 28341643 37538600 38562380 42418618 48202975 50162200 51530260 56683286 64412825 77124760 84837236 96405950 103060520 106046545 113366572 128825650 141708215 169674472 192811900 212093090 226733144 257651300 283416430 291145969 385623800 424186180 515302600 530232725 566832860 582291938 708541075 848372360 1060465450 1133665720 1164583876 1417082150 1455729845 2120930900 2329167752 2834164300 2911459690 3202605659 4241861800 5668328600 5822919380 6405211318 7278649225 11645838760 12810422636 14557298450 16013028295 25620845272 29114596900 32026056590 58229193800 64052113180 80065141475 128104226360 160130282950 320260565900 640521131800
• Sum of all divisors σ(n): 1650025524420
• Sum of proper divisors (its aliquot sum) s(n): 1009504392620
• 640521131800 is an abundant number, because the sum of its proper divisors (1009504392620) is greater than itself. Its abundance is 368983260820

Bases of 640521131800

• Binary: 1001010100100010000010001101011100011000₂
• Hexadecimal: 0x952208D718
• Base-36: 8691QSD4

Squares and roots of 640521131800

• 640521131800 squared (640521131800²) is 410267320282352971240000
• 640521131800 cubed (640521131800³) is 262784888327805820705737649432000000
• The square root of 640521131800 is 800325.6410986717
• The cube root of 640521131800 is 8620.0771764345

Scales and comparisons

• 640,521,131,800 seconds is equal to 20,366 years, 30 weeks, 5 days, 36 minutes, 40 seconds.
• To count from 1 to 640,521,131,800 would take you about forty thousand, seven hundred thirty-three 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 640521131800 cubic inches would be around 718.3 feet tall.

Recreational maths with 640521131800

• 640521131800 backwards is 008131125046
• The number of decimal digits it has is: 12
• The sum of 640521131800's digits is 31
• More coming soon!