20239713056 has 24 divisors (see below), whose sum is σ = 40522310640. Its totient is φ = 9948332608.

The previous prime is 20239713019. The next prime is 20239713073. The reversal of 20239713056 is 65031793202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5358206 + ... + 5361981.

It is an arithmetic number, because the mean of its divisors is an integer number (1688429610).

Almost surely, 2^20239713056 is an apocalyptic number.

It is an amenable number.

20239713056 is an abundant number, since it is smaller than the sum of its proper divisors (20282597584).

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

20239713056 is a wasteful number, since it uses less digits than its factorization.

20239713056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10720256 (or 10720248 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 20239713056 in words is "twenty billion, two hundred thirty-nine million, seven hundred thirteen thousand, fifty-six".