6561329940

Names of 6561329940

• Cardinal: 6561329940 can be written as Six billion, five hundred sixty-one million, three hundred twenty-nine thousand, nine hundred forty.

Scientific notation

• Scientific notation: 6.56132994 × 10⁹

Factors of 6561329940

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1072

Divisors of 6561329940

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 27 30 33 36 44 45 54 55 60 66 90 99 108 110 132 135 165 180 198 220 270 297 330 396 495 540 594 660 990 1051 1188 1485 1980 2102 2970 3153 4204 5255 5940 6306 9459 10510 11561 12612 15765 18918 21020 23122 28377 31530 34683 37836 46244 47295 56754 57805 63060 69366 94590 104049 113508 115610 138732 141885 173415 189180 208098 231220 283770 312147 346830 416196 520245 567540 624294 693660 1040490 1104601 1248588 1560735 2080980 2209202 3121470 3313803 4418404 5523005 6242940 6627606 9941409 11046010 12150611 13255212 16569015 19882818 22092020 24301222 29824227 33138030 36451833 39765636 48602444 49707045 59648454 60753055 66276060 72903666 99414090 109355499 119296908 121506110 145807332 149121135 182259165 198828180 218710998 243012220 298242270 328066497 364518330 437421996 546777495 596484540 656132994 729036660 1093554990 1312265988 1640332485 2187109980 3280664970 6561329940
• Sum of all divisors σ(n): 22289964480
• Sum of proper divisors (its aliquot sum) s(n): 15728634540
• 6561329940 is an abundant number, because the sum of its proper divisors (15728634540) is greater than itself. Its abundance is 9167304600

Bases of 6561329940

• Binary: 110000111000101011111001100010100₂
• Hexadecimal: 0x18715F314
• Base-36: 30IG2L0

Squares and roots of 6561329940

• 6561329940 squared (6561329940²) is 43051050581540403600
• 6561329940 cubed (6561329940³) is 282472147129115461460363784000
• The square root of 6561329940 is 81002.0366410623
• The cube root of 6561329940 is 1872.1068212383

Scales and comparisons

• 6,561,329,940 seconds is equal to 208 years, 32 weeks, 5 days, 7 hours, 39 minutes.
• To count from 1 to 6,561,329,940 would take you about four hundred seventeen 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 6561329940 cubic inches would be around 156 feet tall.

Recreational maths with 6561329940

• 6561329940 backwards is 0499231656
• 6561329940 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6561329940's digits is 45
• More coming soon!