20445364392 has 32 divisors (see below), whose sum is σ = 52494856800. Its totient is φ = 6630928704.

The previous prime is 20445364351. The next prime is 20445364397. The reversal of 20445364392 is 29346354402.

It is not an unprimeable number, because it can be changed into a prime (20445364397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11511142 + ... + 11512917.

It is an arithmetic number, because the mean of its divisors is an integer number (1640464275).

Almost surely, 2^20445364392 is an apocalyptic number.

It is an amenable number.

20445364392 is an abundant number, since it is smaller than the sum of its proper divisors (32049492408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20445364392 is a wasteful number, since it uses less digits than its factorization.

20445364392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23024105 (or 23024101 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 20445364392 in words is "twenty billion, four hundred forty-five million, three hundred sixty-four thousand, three hundred ninety-two".