56787588769 has 2 divisors, whose sum is σ = 56787588770. Its totient is φ = 56787588768.

The previous prime is 56787588751. The next prime is 56787588779. The reversal of 56787588769 is 96788578765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52066112400 + 4721476369 = 228180^2 + 68713^2 .

It is a cyclic number.

It is not a de Polignac number, because 56787588769 - 2²³ = 56779200161 is a prime.

It is a super-2 number, since 2×56787588769² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56787588695 and 56787588704.

It is not a weakly prime, because it can be changed into another prime (56787588709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28393794384 + 28393794385.

It is an arithmetic number, because the mean of its divisors is an integer number (28393794385).

Almost surely, 2^56787588769 is an apocalyptic number.

It is an amenable number.

56787588769 is a deficient number, since it is larger than the sum of its proper divisors (1).

56787588769 is an equidigital number, since it uses as much as digits as its factorization.

56787588769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1422489600, while the sum is 76.

The spelling of 56787588769 in words is "fifty-six billion, seven hundred eighty-seven million, five hundred eighty-eight thousand, seven hundred sixty-nine".