# 640342928572731

## 640,342,928,572,731 is an odd composite number composed of five prime numbers multiplied together.

What does the number 640342928572731 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 64 divisors.

640342928572731 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.

## Prime factorization of 640342928572731:

### 33 × 29 × 41 × 59 × 338076503

(3 × 3 × 3 × 29 × 41 × 59 × 338076503)

See below for interesting mathematical facts about the number 640342928572731 from the Numbermatics database.

### Names of 640342928572731

• Cardinal: 640342928572731 can be written as Six hundred forty trillion, three hundred forty-two billion, nine hundred twenty-eight million, five hundred seventy-two thousand, seven hundred thirty-one.

### Scientific notation

• Scientific notation: 6.40342928572731 × 1014

### Factors of 640342928572731

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 338076635

### Divisors of 640342928572731

• Number of divisors d(n): 64
• Complete list of divisors:
• Sum of all divisors σ(n): 1022343348096000
• Sum of proper divisors (its aliquot sum) s(n): 382000419523269
• 640342928572731 is a deficient number, because the sum of its proper divisors (382000419523269) is less than itself. Its deficiency is 258342509049462

### Bases of 640342928572731

• Binary: 100100011001100011011101001100101011000001001110112
• Base-36: 6AZDHAIA0R

### Squares and roots of 640342928572731

• 640342928572731 squared (6403429285727312) is 410039066173101675320756798361
• 640342928572731 cubed (6403429285727313) is 262565616462511766024985443046520702890093891
• The square root of 640342928572731 is 25304998.0946992171
• The cube root of 640342928572731 is 86192.7768782219

### Scales and comparisons

How big is 640342928572731?
• 640,342,928,572,731 seconds is equal to 20,360,924 years, 21 weeks, 5 days, 2 hours, 38 minutes, 51 seconds.
• To count from 1 to 640,342,928,572,731 would take you about fifty million, nine hundred two thousand, three hundred eleven 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 640342928572731 cubic inches would be around 7182.7 feet tall.

### Recreational maths with 640342928572731

• 640342928572731 backwards is 137275829243046
• The number of decimal digits it has is: 15
• The sum of 640342928572731's digits is 63
• More coming soon!