640045699072

Names of 640045699072

• Cardinal: 640045699072 can be written as Six hundred forty billion, forty-five million, six hundred ninety-nine thousand and seventy-two.

Scientific notation

• Scientific notation: 6.40045699072 × 10¹¹

Factors of 640045699072

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 3482

Divisors of 640045699072

• Number of divisors d(n): 78
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 104 128 208 256 416 512 832 1024 1664 2048 3328 3467 4096 6656 6934 13312 13868 26624 27736 45071 53248 55472 90142 110944 180284 221888 360568 443776 721136 887552 1442272 1775104 2884544 3550208 5769088 7100416 11538176 12020089 14200832 23076352 24040178 46152704 48080356 92305408 96160712 156261157 184610816 192321424 312522314 384642848 625044628 769285696 1250089256 1538571392 2500178512 3077142784 5000357024 6154285568 10000714048 12308571136 20001428096 24617142272 40002856192 49234284544 80005712384 160011424768 320022849536 640045699072
• Sum of all divisors σ(n): 1378789375418
• Sum of proper divisors (its aliquot sum) s(n): 738743676346
• 640045699072 is an abundant number, because the sum of its proper divisors (738743676346) is greater than itself. Its abundance is 98697977274

Bases of 640045699072

• Binary: 1001010100000101101100100101000000000000₂
• Hexadecimal: 0x9505B25000
• Base-36: 8616OM4G

Squares and roots of 640045699072

• 640045699072 squared (640045699072²) is 409658496900565181661184
• 640045699072 cubed (640045699072³) is 262200159029506986968235187527221248
• The square root of 640045699072 is 800028.5614101537
• The cube root of 640045699072 is 8617.9438712165

Scales and comparisons

• 640,045,699,072 seconds is equal to 20,351 years, 24 weeks, 4 days, 7 hours, 57 minutes, 52 seconds.
• To count from 1 to 640,045,699,072 would take you about forty thousand, seven hundred 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 640045699072 cubic inches would be around 718.2 feet tall.

Recreational maths with 640045699072

• 640045699072 backwards is 270996540046
• 640045699072 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640045699072's digits is 52
• More coming soon!