56780788563 has 16 divisors (see below), whose sum is σ = 84258293760. Its totient is φ = 37791485928.

The previous prime is 56780788553. The next prime is 56780788577. The reversal of 56780788563 is 36588708765.

56780788563 is a `hidden beast` number, since 5 + 67 + 8 + 0 + 7 + 8 + 8 + 563 = 666.

It is not a de Polignac number, because 56780788563 - 2⁶ = 56780788499 is a prime.

It is a super-2 number, since 2×56780788563² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56780788563.

It is not an unprimeable number, because it can be changed into a prime (56780788513) 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 15 ways as a sum of consecutive naturals, for example, 1715895 + ... + 1748672.

It is an arithmetic number, because the mean of its divisors is an integer number (5266143360).

Almost surely, 2^56780788563 is an apocalyptic number.

56780788563 is a deficient number, since it is larger than the sum of its proper divisors (27477505197).

56780788563 is a wasteful number, since it uses less digits than its factorization.

56780788563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3465183 (or 3465177 counting only the distinct ones).

The product of its (nonzero) digits is 67737600, while the sum is 63.

The spelling of 56780788563 in words is "fifty-six billion, seven hundred eighty million, seven hundred eighty-eight thousand, five hundred sixty-three".