640985535000

Names of 640985535000

• Cardinal: 640985535000 can be written as Six hundred forty billion, nine hundred eighty-five million, five hundred thirty-five thousand.

Scientific notation

• Scientific notation: 6.40985535 × 10¹¹

Factors of 640985535000

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2189

Divisors of 640985535000

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 90 100 108 120 125 135 150 180 200 216 225 250 270 300 360 375 450 500 540 600 625 675 750 900 1000 1080 1125 1250 1350 1500 1800 1875 2179 2250 2500 2700 3000 3375 3750 4358 4500 5000 5400 5625 6537 6750 7500 8716 9000 10895 11250 13074 13500 15000 16875 17432 19611 21790 22500 26148 27000 32685 33750 39222 43580 45000 52296 54475 58833 65370 67500 78444 87160 98055 108950 117666 130740 135000 156888 163425 196110 217900 235332 261480 272375 294165 326850 392220 435800 470664 490275 544750 588330 653700 784440 817125 980550 1089500 1176660 1307400 1361875 1470825 1634250 1961100 2179000 2353320 2451375 2723750 2941650 3268500 3922200 4085625 4748041 4902750 5447500 5883300 6537000 7354125 8171250 9496082 9805500 10895000 11766600 12256875 14244123 14708250 16342500 18992164 19611000 23740205 24513750 28488246 29416500 32685000 36770625 37984328 42732369 47480410 49027500 56976492 58833000 71220615 73541250 85464738 94960820 98055000 113952984 118701025 128197107 142441230 147082500 170929476 189921640 213661845 237402050 256394214 284882460 294165000 341858952 356103075 427323690 474804100 512788428 569764920 593505125 640985535 712206150 854647380 949608200 1025576856 1068309225 1187010250 1281971070 1424412300 1709294760 1780515375 2136618450 2374020500 2563942140 2848824600 2967525625 3204927675 3561030750 4273236900 4748041000 5127884280 5341546125 5935051250 6409855350 7122061500 8546473800 8902576875 10683092250 11870102500 12819710700 14244123000 16024638375 17805153750 21366184500 23740205000 25639421400 26707730625 32049276750 35610307500 42732369000 53415461250 64098553500 71220615000 80123191875 106830922500 128197107000 160246383750 213661845000 320492767500 640985535000
• Sum of all divisors σ(n): 2225953560600
• Sum of proper divisors (its aliquot sum) s(n): 1584968025600
• 640985535000 is an abundant number, because the sum of its proper divisors (1584968025600) is greater than itself. Its abundance is 943982490600

Bases of 640985535000

• Binary: 1001010100111101101101110001001000011000₂
• Hexadecimal: 0x953DB71218
• Base-36: 86GQ8K60

Squares and roots of 640985535000

• 640985535000 squared (640985535000²) is 410862456079236225000000
• 640985535000 cubed (640985535000³) is 263356891221363234073005375000000000
• The square root of 640985535000 is 800615.7224286819
• The cube root of 640985535000 is 8622.1599723147

Scales and comparisons

• 640,985,535,000 seconds is equal to 20,381 years, 18 weeks, 4 days, 1 hour, 30 minutes.
• To count from 1 to 640,985,535,000 would take you about forty thousand, seven hundred sixty-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 640985535000 cubic inches would be around 718.5 feet tall.

Recreational maths with 640985535000

• 640985535000 backwards is 000535589046
• 640985535000 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640985535000's digits is 45
• More coming soon!