6561000000

Names of 6561000000

• Cardinal: 6561000000 can be written as Six billion, five hundred sixty-one million.

Scientific notation

• Scientific notation: 6.561 × 10⁹

Factors of 6561000000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 20
• Sum of prime factors: 10

Divisors of 6561000000

• Number of divisors d(n): 441
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 25 27 30 32 36 40 45 48 50 54 60 64 72 75 80 81 90 96 100 108 120 125 135 144 150 160 162 180 192 200 216 225 240 243 250 270 288 300 320 324 360 375 400 405 432 450 480 486 500 540 576 600 625 648 675 720 729 750 800 810 864 900 960 972 1000 1080 1125 1200 1215 1250 1296 1350 1440 1458 1500 1600 1620 1728 1800 1875 1944 2000 2025 2160 2187 2250 2400 2430 2500 2592 2700 2880 2916 3000 3125 3240 3375 3600 3645 3750 3888 4000 4050 4320 4374 4500 4800 4860 5000 5184 5400 5625 5832 6000 6075 6250 6480 6561 6750 7200 7290 7500 7776 8000 8100 8640 8748 9000 9375 9720 10000 10125 10800 10935 11250 11664 12000 12150 12500 12960 13122 13500 14400 14580 15000 15552 15625 16200 16875 17496 18000 18225 18750 19440 20000 20250 21600 21870 22500 23328 24000 24300 25000 25920 26244 27000 28125 29160 30000 30375 31250 32400 32805 33750 34992 36000 36450 37500 38880 40000 40500 43200 43740 45000 46656 46875 48600 50000 50625 52488 54000 54675 56250 58320 60000 60750 62500 64800 65610 67500 69984 72000 72900 75000 77760 81000 84375 87480 90000 91125 93750 97200 100000 101250 104976 108000 109350 112500 116640 120000 121500 125000 129600 131220 135000 139968 140625 145800 150000 151875 162000 164025 168750 174960 180000 182250 187500 194400 200000 202500 209952 216000 218700 225000 233280 243000 250000 253125 262440 270000 273375 281250 291600 300000 303750 324000 328050 337500 349920 360000 364500 375000 388800 405000 419904 421875 437400 450000 455625 486000 500000 506250 524880 540000 546750 562500 583200 600000 607500 648000 656100 675000 699840 729000 750000 759375 810000 820125 843750 874800 900000 911250 972000 1000000 1012500 1049760 1080000 1093500 1125000 1166400 1215000 1265625 1312200 1350000 1366875 1458000 1500000 1518750 1620000 1640250 1687500 1749600 1800000 1822500 1944000 2025000 2099520 2187000 2250000 2278125 2430000 2531250 2624400 2700000 2733750 2916000 3000000 3037500 3240000 3280500 3375000 3499200 3645000 3796875 4050000 4100625 4374000 4500000 4556250 4860000 5062500 5248800 5400000 5467500 5832000 6075000 6561000 6750000 6834375 7290000 7593750 8100000 8201250 8748000 9000000 9112500 9720000 10125000 10497600 10935000 11390625 12150000 13122000 13500000 13668750 14580000 15187500 16200000 16402500 17496000 18225000 20250000 20503125 21870000 22781250 24300000 26244000 27000000 27337500 29160000 30375000 32805000 34171875 36450000 40500000 41006250 43740000 45562500 48600000 52488000 54675000 60750000 65610000 68343750 72900000 81000000 82012500 87480000 91125000 102515625 109350000 121500000 131220000 136687500 145800000 164025000 182250000 205031250 218700000 243000000 262440000 273375000 328050000 364500000 410062500 437400000 546750000 656100000 729000000 820125000 1093500000 1312200000 1640250000 2187000000 3280500000 6561000000
• Sum of all divisors σ(n): 24409980517
• Sum of proper divisors (its aliquot sum) s(n): 17848980517
• 6561000000 is an abundant number, because the sum of its proper divisors (17848980517) is greater than itself. Its abundance is 11287980517

Bases of 6561000000

• Binary: 110000111000100001110101001000000₂
• Hexadecimal: 0x18710EA40
• Base-36: 30I9000

Squares and roots of 6561000000

• 6561000000 squared (6561000000²) is 43046721000000000000
• 6561000000 cubed (6561000000³) is 282429536481000000000000000000
• 6561000000 is a perfect square number. Its square root is 81000
• The cube root of 6561000000 is 1872.0754407467
• Being both a perfect square and a perfect cube, 6561000000 is also a perfect sixth number.

Scales and comparisons

• 6,561,000,000 seconds is equal to 208 years, 32 weeks, 1 day, 12 hours.
• To count from 1 to 6,561,000,000 would take you about four hundred seventeen 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 6561000000 cubic inches would be around 156 feet tall.

Recreational maths with 6561000000

• 6561000000 backwards is 0000001656
• 6561000000 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 6561000000's digits is 18
• More coming soon!