56782028766 has 16 divisors (see below), whose sum is σ = 113643880704. Its totient is φ = 18914039064.

The previous prime is 56782028759. The next prime is 56782028801. The reversal of 56782028766 is 66782028765.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3316716 + ... + 3333791.

It is an arithmetic number, because the mean of its divisors is an integer number (7102742544).

Almost surely, 2^56782028766 is an apocalyptic number.

56782028766 is an abundant number, since it is smaller than the sum of its proper divisors (56861851938).

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

56782028766 is a wasteful number, since it uses less digits than its factorization.

56782028766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651935.

The product of its (nonzero) digits is 13547520, while the sum is 57.

Subtracting 56782028766 from its reverse (66782028765), we obtain a palindrome (9999999999).

The spelling of 56782028766 in words is "fifty-six billion, seven hundred eighty-two million, twenty-eight thousand, seven hundred sixty-six".