664399136640

Names of 664399136640

• Cardinal: 664399136640 can be written as Six hundred sixty-four billion, three hundred ninety-nine million, one hundred thirty-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.6439913664 × 10¹¹

Factors of 664399136640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 37448

Divisors of 664399136640

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 320 384 480 640 960 1920 16631 20807 33262 41614 49893 62421 66524 83155 83228 99786 104035 124842 133048 166310 166456 199572 208070 249465 249684 266096 312105 332620 332912 399144 416140 498930 499368 532192 624210 665240 665824 798288 832280 997860 998736 1064384 1248420 1330480 1331648 1596576 1664560 1995720 1997472 2128768 2496840 2660960 2663296 3193152 3329120 3991440 3994944 4993680 5321920 6386304 6658240 7982880 7989888 9987360 10643840 13316480 15965760 19974720 31931520 39949440 346041217 692082434 1038123651 1384164868 1730206085 2076247302 2768329736 3460412170 4152494604 5190618255 5536659472 6920824340 8304989208 10381236510 11073318944 13841648680 16609978416 20762473020 22146637888 27683297360 33219956832 41524946040 44293275776 55366594720 66439913664 83049892080 110733189440 132879827328 166099784160 221466378880 332199568320 664399136640
• Sum of all divisors σ(n): 2118001374720
• Sum of proper divisors (its aliquot sum) s(n): 1453602238080
• 664399136640 is an abundant number, because the sum of its proper divisors (1453602238080) is greater than itself. Its abundance is 789203101440

Bases of 664399136640

• Binary: 1001101010110001010001100100011110000000₂
• Hexadecimal: 0x9AB1464780
• Base-36: 8H7Y3ATC

Squares and roots of 664399136640

• 664399136640 squared (664399136640²) is 441426212767977390489600
• 664399136640 cubed (664399136640³) is 293283194653309122880330386898944000
• The square root of 664399136640 is 815106.8252934703
• The cube root of 664399136640 is 8725.8890472183

Scales and comparisons

• 664,399,136,640 seconds is equal to 21,125 years, 43 weeks, 3 days, 19 hours, 44 minutes.
• To count from 1 to 664,399,136,640 would take you about forty-two thousand, two hundred fifty-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 664399136640 cubic inches would be around 727.2 feet tall.

Recreational maths with 664399136640

• 664399136640 backwards is 046631993466
• The number of decimal digits it has is: 12
• The sum of 664399136640's digits is 57
• More coming soon!