640549385200368

Names of 640549385200368

• Cardinal: 640549385200368 can be written as Six hundred forty trillion, five hundred forty-nine billion, three hundred eighty-five million, two hundred thousand, three hundred sixty-eight.

Scientific notation

• Scientific notation: 6.40549385200368 × 10¹⁴

Factors of 640549385200368

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 797173

Divisors of 640549385200368

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 56 63 72 84 112 126 144 168 252 336 504 1008 797161 1594322 2391483 3188644 4782966 5580127 6377288 7174449 9565932 11160254 12754576 14348898 16740381 19131864 22320508 28697796 33480762 38263728 44641016 50221143 57395592 66961524 89282032 100442286 114791184 133923048 200884572 267846096 401769144 803538288 635465659921 1270931319842 1906396979763 2541862639684 3812793959526 4448259619447 5083725279368 5719190939289 7625587919052 8896519238894 10167450558736 11438381878578 13344778858341 15251175838104 17793038477788 22876763757156 26689557716682 30502351676208 35586076955576 40034336575023 45753527514312 53379115433364 71172153911152 80068673150046 91507055028624 106758230866728 160137346300092 213516461733456 320274692600184 640549385200368
• Sum of all divisors σ(n): 2048743857635592
• Sum of proper divisors (its aliquot sum) s(n): 1408194472435224
• 640549385200368 is an abundant number, because the sum of its proper divisors (1408194472435224) is greater than itself. Its abundance is 767645087234856

Bases of 640549385200368

• Binary: 10010001101001001110000110100100001110001011110000₂
• Hexadecimal: 0x246938690E2F0
• Base-36: 6B20BPGBG0

Squares and roots of 640549385200368

• 640549385200368 squared (640549385200368²) is 410303514880569423387507335424
• 640549385200368 cubed (640549385200368³) is 262819664202298787270262374614139984024236032
• The square root of 640549385200368 is 25309077.1305547213
• The cube root of 640549385200368 is 86202.0391849845

Scales and comparisons

• 640,549,385,200,368 seconds is equal to 20,367,489 years, 5 weeks, 1 day, 9 hours, 52 minutes, 48 seconds.
• To count from 1 to 640,549,385,200,368 would take you about fifty million, nine hundred eighteen thousand, seven hundred twenty-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 640549385200368 cubic inches would be around 7183.5 feet tall.

Recreational maths with 640549385200368

• 640549385200368 backwards is 863002583945046
• 640549385200368 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 640549385200368's digits is 63
• More coming soon!