640509216309

Names of 640509216309

• Cardinal: 640509216309 can be written as Six hundred forty billion, five hundred nine million, two hundred sixteen thousand, three hundred nine.

Scientific notation

• Scientific notation: 6.40509216309 × 10¹¹

Factors of 640509216309

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 411

Divisors of 640509216309

• Number of divisors d(n): 120
• Complete list of divisors:
  1 3 9 27 53 81 97 101 157 159 291 303 471 477 873 909 1413 1431 2619 2727 4239 4293 5141 5353 7857 8181 8321 9409 9797 12717 15229 15423 15857 16059 24963 28227 29391 45687 46269 47571 48177 74889 84681 88173 137061 138807 142713 144531 224667 254043 264519 411183 416421 428139 433593 498677 519241 674001 762129 793557 807137 840421 950309 1233549 1284417 1477213 1496031 1538129 1557723 2421411 2521263 2850927 4431639 4488093 4614387 4673169 7264233 7563789 8552781 13294917 13464279 13843161 14019507 21792699 22691367 25658343 39884751 40392837 41529483 42058521 50366377 65378097 68074101 76975029 78292289 81520837 119654253 124588449 149198513 151099131 234876867 244562511 447595539 453297393 704630601 733687533 1342786617 1359892179 2113891803 2201062599 4028359851 4079676537 6341675409 6603187797 7907521189 12085079553 23722563567 71167690701 213503072103 640509216309
• Sum of all divisors σ(n): 1001105581608
• Sum of proper divisors (its aliquot sum) s(n): 360596365299
• 640509216309 is a deficient number, because the sum of its proper divisors (360596365299) is less than itself. Its deficiency is 279912851010

Bases of 640509216309

• Binary: 1001010100100001010100110000011000110101₂
• Hexadecimal: 0x9521530635
• Base-36: 868UNEB9

Squares and roots of 640509216309

• 640509216309 squared (640509216309²) is 410252056176769351583481
• 640509216309 cubed (640509216309³) is 262770222990938380154185503500191629
• The square root of 640509216309 is 800318.1969123281
• The cube root of 640509216309 is 8620.0237235589

Scales and comparisons

• 640,509,216,309 seconds is equal to 20,366 years, 11 weeks, 2 hours, 45 minutes, 9 seconds.
• To count from 1 to 640,509,216,309 would take you about forty thousand, seven hundred thirty-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 640509216309 cubic inches would be around 718.3 feet tall.

Recreational maths with 640509216309

• 640509216309 backwards is 903612905046
• The number of decimal digits it has is: 12
• The sum of 640509216309's digits is 45
• More coming soon!