642940889706080

Names of 642940889706080

• Cardinal: 642940889706080 can be written as Six hundred forty-two trillion, nine hundred forty billion, eight hundred eighty-nine million, seven hundred six thousand and eighty.

Scientific notation

• Scientific notation: 6.4294088970608 × 10¹⁴

Factors of 642940889706080

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 574054365823

Divisors of 642940889706080

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 574054365809 1148108731618 2296217463236 2870271829045 4018380560663 4592434926472 5740543658090 8036761121326 9184869852944 11481087316180 16073522242652 18369739705888 20091902803315 22962174632360 32147044485304 40183805606630 45924349264720 64294088970608 80367611213260 91848698529440 128588177941216 160735222426520 321470444853040 642940889706080
• Sum of all divisors σ(n): 1735940402209440
• Sum of proper divisors (its aliquot sum) s(n): 1092999512503360
• 642940889706080 is an abundant number, because the sum of its proper divisors (1092999512503360) is greater than itself. Its abundance is 450058622797280

Bases of 642940889706080

• Binary: 10010010001100000001010111010101111010111001100000₂
• Hexadecimal: 0x248C05757AE60
• Base-36: 6BWIYTHLY8

Squares and roots of 642940889706080

• 642940889706080 squared (642940889706080²) is 413372987656045727308788966400
• 642940889706080 cubed (642940889706080³) is 265774396464038465264745122708796842995712000
• The square root of 642940889706080 is 25356279.0982052413
• The cube root of 642940889706080 is 86309.1849895049

Scales and comparisons

• 642,940,889,706,080 seconds is equal to 20,443,531 years, 28 weeks, 2 days, 17 hours, 1 minute, 20 seconds.
• To count from 1 to 642,940,889,706,080 would take you about fifty-one million, one hundred eight thousand, eight hundred twenty-eight 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 642940889706080 cubic inches would be around 7192.4 feet tall.

Recreational maths with 642940889706080

• 642940889706080 backwards is 080607988049246
• The number of decimal digits it has is: 15
• The sum of 642940889706080's digits is 71
• More coming soon!