640491454464

Names of 640491454464

• Cardinal: 640491454464 can be written as Six hundred forty billion, four hundred ninety-one million, four hundred fifty-four thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 6.40491454464 × 10¹¹

Factors of 640491454464

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 21
• Sum of prime factors: 6353

Divisors of 640491454464

• Number of divisors d(n): 152
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 32 48 64 96 128 131 192 256 262 384 393 512 524 768 786 1024 1048 1536 1572 2048 2096 3072 3144 4096 4192 6144 6217 6288 8192 8384 12288 12434 12576 16384 16768 18651 24576 24868 25152 32768 33536 37302 49152 49736 50304 65536 67072 74604 98304 99472 100608 131072 134144 149208 196608 198944 201216 262144 268288 298416 393216 397888 402432 536576 596832 786432 795776 804864 814427 1073152 1193664 1591552 1609728 1628854 2146304 2387328 2443281 3183104 3219456 3257708 4292608 4774656 4886562 6366208 6438912 6515416 8585216 9549312 9773124 12732416 12877824 13030832 17170432 19098624 19546248 25464832 25755648 26061664 34340864 38197248 39092496 50929664 51511296 52123328 76394496 78184992 101859328 103022592 104246656 152788992 156369984 203718656 208493312 305577984 312739968 407437312 416986624 611155968 625479936 814874624 833973248 1222311936 1250959872 1629749248 1667946496 2444623872 2501919744 3335892992 4889247744 5003839488 6671785984 10007678976 13343571968 20015357952 26687143936 40030715904 53374287872 80061431808 106748575744 160122863616 213497151488 320245727232 640491454464
• Sum of all divisors σ(n): 1721288746848
• Sum of proper divisors (its aliquot sum) s(n): 1080797292384
• 640491454464 is an abundant number, because the sum of its proper divisors (1080797292384) is greater than itself. Its abundance is 440305837920

Bases of 640491454464

• Binary: 1001010100100000010001000000000000000000₂
• Hexadecimal: 0x9520440000
• Base-36: 868K2P6O

Squares and roots of 640491454464

• 640491454464 squared (640491454464²) is 410229303241410185527296
• 640491454464 cubed (640491454464³) is 262748363096844119442801897813049344
• The square root of 640491454464 is 800307.1000959567
• The cube root of 640491454464 is 8619.9440427171

Scales and comparisons

• 640,491,454,464 seconds is equal to 20,365 years, 33 weeks, 4 days, 12 hours, 54 minutes, 24 seconds.
• To count from 1 to 640,491,454,464 would take you about forty thousand, seven hundred thirty-one 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 640491454464 cubic inches would be around 718.3 feet tall.

Recreational maths with 640491454464

• 640491454464 backwards is 464454194046
• The number of decimal digits it has is: 12
• The sum of 640491454464's digits is 51
• More coming soon!