20332322209 has 4 divisors (see below), whose sum is σ = 20461827604. Its totient is φ = 20202816816.

The previous prime is 20332322203. The next prime is 20332322267. The reversal of 20332322209 is 90222323302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12918595600 + 7413726609 = 113660^2 + 86103^2 .

It is a cyclic number.

It is not a de Polignac number, because 20332322209 - 2⁹ = 20332321697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20332322203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64752462 + ... + 64752775.

It is an arithmetic number, because the mean of its divisors is an integer number (5115456901).

Almost surely, 2^20332322209 is an apocalyptic number.

It is an amenable number.

20332322209 is a deficient number, since it is larger than the sum of its proper divisors (129505395).

20332322209 is a wasteful number, since it uses less digits than its factorization.

20332322209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129505394.

The product of its (nonzero) digits is 7776, while the sum is 28.

The spelling of 20332322209 in words is "twenty billion, three hundred thirty-two million, three hundred twenty-two thousand, two hundred nine".