640983249304209672

Names of 640983249304209672

• Cardinal: 640983249304209672 can be written as Six hundred forty quadrillion, nine hundred eighty-three trillion, two hundred forty-nine billion, three hundred four million, two hundred nine thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 6.40983249304209672 × 10¹⁷

Factors of 640983249304209672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 246296334544

Divisors of 640983249304209672

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 21 24 28 42 49 56 84 98 147 168 196 294 392 588 1176 2213 4426 6639 8852 13278 15491 17704 26556 30982 46473 53112 61964 92946 108437 123928 185892 216874 325311 371784 433748 650622 867496 1301244 2602488 246296332319 492592664638 738888996957 985185329276 1477777993914 1724074326233 1970370658552 2955555987828 3448148652466 5172222978699 5911111975656 6896297304932 10344445957398 12068520283631 13792594609864 20688891914796 24137040567262 36205560850893 41377783829592 48274081134524 72411121701786 96548162269048 144822243403572 289644486807144 545053783421947 1090107566843894 1635161350265841 2180215133687788 3270322700531682 3815376483953629 4360430267375576 6540645401063364 7630752967907258 11446129451860887 13081290802126728 15261505935814516 22892258903721774 26707635387675403 30523011871629032 45784517807443548 53415270775350806 80122906163026209 91569035614887096 106830541550701612 160245812326052418 213661083101403224 320491624652104836 640983249304209672
• Sum of all divisors σ(n): 1864926272767161600
• Sum of proper divisors (its aliquot sum) s(n): 1223943023462951928
• 640983249304209672 is an abundant number, because the sum of its proper divisors (1223943023462951928) is greater than itself. Its abundance is 582959774158742256

Bases of 640983249304209672

• Binary: 100011100101001110101101111010000001110000001100100100001000₂
• Hexadecimal: 0x8E53ADE81C0C908
• Base-36: 4VBDLJM2NVGO

Squares and roots of 640983249304209672

• 640983249304209672 squared (640983249304209672²) is 410859525888582608964112180538347584
• 640983249304209672 cubed (640983249304209672³) is 263354073911650734307354373899821429696395917950632448
• The square root of 640983249304209672 is 800614294.9661901159
• The cube root of 640983249304209672 is 862214.9723691321

Scales and comparisons

• 640,983,249,304,209,672 seconds is equal to 20,381,284,636 years, 26 weeks, 1 day, 14 hours, 41 minutes, 12 seconds.
• To count from 1 to 640,983,249,304,209,672 would take you about sixty-one billion, one hundred forty-three million, eight hundred fifty-three thousand, nine hundred nine 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 640983249304209672 cubic inches would be around 71851.2 feet tall.

Recreational maths with 640983249304209672

• 640983249304209672 backwards is 276902403942389046
• The number of decimal digits it has is: 18
• The sum of 640983249304209672's digits is 78
• More coming soon!