56391767039 has 16 divisors (see below), whose sum is σ = 61787214720. Its totient is φ = 51228387840.

The previous prime is 56391767009. The next prime is 56391767053. The reversal of 56391767039 is 93076719365.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56391767039 - 2²⁴ = 56374989823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56391767009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729562 + ... + 1761864.

It is an arithmetic number, because the mean of its divisors is an integer number (3861700920).

Almost surely, 2^56391767039 is an apocalyptic number.

56391767039 is a deficient number, since it is larger than the sum of its proper divisors (5395447681).

56391767039 is a wasteful number, since it uses less digits than its factorization.

56391767039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35890.

The product of its (nonzero) digits is 6429780, while the sum is 56.

The spelling of 56391767039 in words is "fifty-six billion, three hundred ninety-one million, seven hundred sixty-seven thousand, thirty-nine".