56780217795 has 48 divisors (see below), whose sum is σ = 105748145568. Its totient is φ = 25940113920.

The previous prime is 56780217713. The next prime is 56780217811. The reversal of 56780217795 is 59771208765.

It is a happy number.

It is a Cunningham number, because it is equal to 238286²-1.

It is not a de Polignac number, because 56780217795 - 2⁸ = 56780217539 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1167607 + ... + 1215263.

It is an arithmetic number, because the mean of its divisors is an integer number (2203086366).

Almost surely, 2^56780217795 is an apocalyptic number.

56780217795 is a deficient number, since it is larger than the sum of its proper divisors (48967927773).

56780217795 is a wasteful number, since it uses less digits than its factorization.

56780217795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49300 (or 49293 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 57.

The spelling of 56780217795 in words is "fifty-six billion, seven hundred eighty million, two hundred seventeen thousand, seven hundred ninety-five".