56391799375 has 30 divisors (see below), whose sum is σ = 71025745736. Its totient is φ = 44756700000.

The previous prime is 56391799369. The next prime is 56391799391. The reversal of 56391799375 is 57399719365.

It is a happy number.

It is not a de Polignac number, because 56391799375 - 2³ = 56391799367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 72951489 + ... + 72952261.

Almost surely, 2^56391799375 is an apocalyptic number.

56391799375 is a deficient number, since it is larger than the sum of its proper divisors (14633946361).

56391799375 is an frugal number, since it uses more digits than its factorization.

56391799375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717 (or 929 counting only the distinct ones).

The product of its digits is 48223350, while the sum is 64.

The spelling of 56391799375 in words is "fifty-six billion, three hundred ninety-one million, seven hundred ninety-nine thousand, three hundred seventy-five".