638831448125

Names of 638831448125

• Cardinal: 638831448125 can be written as Six hundred thirty-eight billion, eight hundred thirty-one million, four hundred forty-eight thousand, one hundred twenty-five.

Scientific notation

• Scientific notation: 6.38831448125 × 10¹¹

Factors of 638831448125

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 8569

Divisors of 638831448125

• Number of divisors d(n): 80
• Complete list of divisors:
  1 5 13 25 29 65 125 145 325 331 377 625 725 1625 1655 1885 3625 4303 8125 8191 8275 9425 9599 18125 21515 40955 41375 47125 47995 106483 107575 124787 204775 206875 235625 237539 239975 532415 537875 623935 1023875 1187695 1199875 2662075 2689375 2711221 3088007 3119675 5119375 5938475 5999375 13310375 13556105 15440035 15598375 29692375 35245873 66551875 67780525 77200175 77991875 78625409 148461875 176229365 338902625 386000875 393127045 881146825 1022130317 1694513125 1930004375 1965635225 4405734125 5110651585 9828176125 22028670625 25553257925 49140880625 127766289625 638831448125
• Sum of all divisors σ(n): 892130426880
• Sum of proper divisors (its aliquot sum) s(n): 253298978755
• 638831448125 is a deficient number, because the sum of its proper divisors (253298978755) is less than itself. Its deficiency is 385532469370

Bases of 638831448125

• Binary: 1001010010111101010100100101000000111101₂
• Hexadecimal: 0x94BD52503D
• Base-36: 85H3R03H

Squares and roots of 638831448125

• 638831448125 squared (638831448125²) is 408105619113484566015625
• 638831448125 cubed (638831448125³) is 260710703646217024022598880126953125
• The square root of 638831448125 is 799269.3213961111
• The cube root of 638831448125 is 8612.4906299247

Scales and comparisons

• 638,831,448,125 seconds is equal to 20,312 years, 44 weeks, 6 days, 12 hours, 2 minutes, 5 seconds.
• To count from 1 to 638,831,448,125 would take you about forty thousand, six hundred twenty-five 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 638831448125 cubic inches would be around 717.7 feet tall.

Recreational maths with 638831448125

• 638831448125 backwards is 521844138836
• The number of decimal digits it has is: 12
• The sum of 638831448125's digits is 53
• More coming soon!