644132429550

Names of 644132429550

• Cardinal: 644132429550 can be written as Six hundred forty-four billion, one hundred thirty-two million, four hundred twenty-nine thousand, five hundred fifty.

Scientific notation

• Scientific notation: 6.4413242955 × 10¹¹

Factors of 644132429550

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 477135143

Divisors of 644132429550

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 9 10 15 18 25 27 30 45 50 54 75 90 135 150 225 270 450 675 1350 477135133 954270266 1431405399 2385675665 2862810798 4294216197 4771351330 7157026995 8588432394 11928378325 12882648591 14314053990 21471080985 23856756650 25765297182 35785134975 42942161970 64413242955 71570269950 107355404925 128826485910 214710809850 322066214775 644132429550
• Sum of all divisors σ(n): 1774942698480
• Sum of proper divisors (its aliquot sum) s(n): 1130810268930
• 644132429550 is an abundant number, because the sum of its proper divisors (1130810268930) is greater than itself. Its abundance is 486677839380

Bases of 644132429550

• Binary: 1001010111111001010010001101111011101110₂
• Hexadecimal: 0x95F948DEEE
• Base-36: 87WRTFJI

Squares and roots of 644132429550

• 644132429550 squared (644132429550²) is 414906586797985713202500
• 644132429550 cubed (644132429550³) is 267254787790484492491315836133875000
• The square root of 644132429550 is 802578.6126916165
• The cube root of 644132429550 is 8636.2470016349

Scales and comparisons

• 644,132,429,550 seconds is equal to 20,481 years, 21 weeks, 5 days, 10 hours, 52 minutes, 30 seconds.
• To count from 1 to 644,132,429,550 would take you about forty thousand, nine hundred sixty-two 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 644132429550 cubic inches would be around 719.7 feet tall.

Recreational maths with 644132429550

• 644132429550 backwards is 055924231446
• 644132429550 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 644132429550's digits is 45
• More coming soon!