56787478764 has 48 divisors (see below), whose sum is σ = 134363066880. Its totient is φ = 18663765120.

The previous prime is 56787478757. The next prime is 56787478771. The reversal of 56787478764 is 46787478765.

It is an interprime number because it is at equal distance from previous prime (56787478757) and next prime (56787478771).

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 15 ways as a sum of consecutive naturals, for example, 3249129 + ... + 3266559.

It is an arithmetic number, because the mean of its divisors is an integer number (2799230560).

Almost surely, 2^56787478764 is an apocalyptic number.

It is an amenable number.

56787478764 is an abundant number, since it is smaller than the sum of its proper divisors (77575588116).

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

56787478764 is a wasteful number, since it uses less digits than its factorization.

56787478764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21230 (or 21228 counting only the distinct ones).

The product of its digits is 442552320, while the sum is 69.

Subtracting from 56787478764 its reverse (46787478765), we obtain a palindrome (9999999999).

The spelling of 56787478764 in words is "fifty-six billion, seven hundred eighty-seven million, four hundred seventy-eight thousand, seven hundred sixty-four".