# 385716765721

## 385,716,765,721 is an odd composite number composed of three prime numbers multiplied together.

What does the number 385716765721 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 45 divisors.

385716765721 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of forty-five divisors.

## Prime factorization of 385716765721:

### 72 × 174 × 3072

(7 × 7 × 17 × 17 × 17 × 17 × 307 × 307)

See below for interesting mathematical facts about the number 385716765721 from the Numbermatics database.

### Names of 385716765721

• Cardinal: 385716765721 can be written as Three hundred eighty-five billion, seven hundred sixteen million, seven hundred sixty-five thousand, seven hundred twenty-one.

### Scientific notation

• Scientific notation: 3.85716765721 × 1011

### Factors of 385716765721

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 331

### Divisors of 385716765721

• Number of divisors d(n): 45
• Complete list of divisors:
• Sum of all divisors σ(n): 478291716009
• Sum of proper divisors (its aliquot sum) s(n): 92574950288
• 385716765721 is a deficient number, because the sum of its proper divisors (92574950288) is less than itself. Its deficiency is 293141815433

### Bases of 385716765721

• Binary: 1011001110011101000001011000100000110012
• Base-36: 4X71SX7D

### Squares and roots of 385716765721

• 385716765721 squared (3857167657212) is 148777423358268800649841
• 385716765721 cubed (3857167657213) is 57385946550055400028398373552900361
• 385716765721 is a perfect square number. Its square root is 621061
• The cube root of 385716765721 is 7279.2981106467

### Scales and comparisons

How big is 385716765721?
• 385,716,765,721 seconds is equal to 12,264 years, 31 weeks, 1 day, 10 hours, 2 minutes, 1 second.
• To count from 1 to 385,716,765,721 would take you about twenty-four thousand, five hundred twenty-nine 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 385716765721 cubic inches would be around 606.6 feet tall.

### Recreational maths with 385716765721

• 385716765721 backwards is 127567617583
• The number of decimal digits it has is: 12
• The sum of 385716765721's digits is 58
• More coming soon!