640625664000000

Names of 640625664000000

• Cardinal: 640625664000000 can be written as Six hundred forty trillion, six hundred twenty-five billion, six hundred sixty-four million.

Scientific notation

• Scientific notation: 6.40625664 × 10¹⁴

Factors of 640625664000000

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 27
• Sum of prime factors: 48

Divisors of 640625664000000

• Number of divisors d(n): 1904
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 31 32 35 40 42 48 50 56 60 62 64 70 75 80 84 93 96 100 105 112 120 124 125 128 140 150 155 160 168 175 186 192 200 210 217 224 240 248 250 256 280 300 310 320 336 350 372 375 384 400 420 434 448 465 480 496 500 512 525 560 600 620 625 640 651 672 700 744 750 768 775 800 840 868 875 896 930 960 961 992 1000 1024 1050 1085 1120 1200 1240 1250 1280 1302 1344 1400 1488 1500 1536 1550 1600 1680 1736 1750 1792 1860 1875 1920 1922 1984 2000 2048 2100 2170 2240 2325 2400 2480 2500 2560 2604 2625 2688 2800 2883 2976 3000 3072 3100 3125 3200 3255 3360 3472 3500 3584 3720 3750 3840 3844 3875 3968 4000 4096 4200 4340 4375 4480 4650 4800 4805 4960 5000 5120 5208 5250 5376 5425 5600 5766 5952 6000 6144 6200 6250 6400 6510 6720 6727 6944 7000 7168 7440 7500 7680 7688 7750 7936 8000 8192 8400 8680 8750 8960 9300 9375 9600 9610 9920 10000 10240 10416 10500 10752 10850 11200 11532 11625 11904 12000 12288 12400 12500 12800 13020 13125 13440 13454 13888 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640625664000000
• Sum of all divisors σ(n): 2521773760882688
• Sum of proper divisors (its aliquot sum) s(n): 1881148096882688
• 640625664000000 is an abundant number, because the sum of its proper divisors (1881148096882688) is greater than itself. Its abundance is 1240522432882688

Bases of 640625664000000

• Binary: 10010001101010010101001001001000110000000000000000₂
• Hexadecimal: 0x246A549230000
• Base-36: 6B2ZD7VPXC

Squares and roots of 640625664000000

• 640625664000000 squared (640625664000000²) is 410401241375440896000000000000
• 640625664000000 cubed (640625664000000³) is 262913567762566097292754944000000000000000000
• The square root of 640625664000000 is 25310584.0311913783
• The cube root of 640625664000000 is 86205.4607931839

Scales and comparisons

• 640,625,664,000,000 seconds is equal to 20,369,914 years, 27 weeks, 3 days, 21 hours, 20 minutes.
• To count from 1 to 640,625,664,000,000 would take you about fifty million, nine hundred twenty-four thousand, seven hundred eighty-six 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 640625664000000 cubic inches would be around 7183.8 feet tall.

Recreational maths with 640625664000000

• 640625664000000 backwards is 000000466526046
• The number of decimal digits it has is: 15
• The sum of 640625664000000's digits is 39
• More coming soon!