56746907751 has 4 divisors (see below), whose sum is σ = 75662543672. Its totient is φ = 37831271832.

The previous prime is 56746907743. The next prime is 56746907753. The reversal of 56746907751 is 15770964765.

It is a happy number.

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

It is not a de Polignac number, because 56746907751 - 2³ = 56746907743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56746907691 and 56746907700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56746907753) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9457817956 + ... + 9457817961.

It is an arithmetic number, because the mean of its divisors is an integer number (18915635918).

Almost surely, 2^56746907751 is an apocalyptic number.

56746907751 is a deficient number, since it is larger than the sum of its proper divisors (18915635921).

56746907751 is a wasteful number, since it uses less digits than its factorization.

56746907751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18915635920.

The product of its (nonzero) digits is 11113200, while the sum is 57.

The spelling of 56746907751 in words is "fifty-six billion, seven hundred forty-six million, nine hundred seven thousand, seven hundred fifty-one".