56828775989 has 2 divisors, whose sum is σ = 56828775990. Its totient is φ = 56828775988.

The previous prime is 56828775961. The next prime is 56828776001. The reversal of 56828775989 is 98957782865.

56828775989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56648760100 + 180015889 = 238010^2 + 13417^2 .

It is a cyclic number.

It is not a de Polignac number, because 56828775989 - 2¹² = 56828771893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56828775589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28414387994 + 28414387995.

It is an arithmetic number, because the mean of its divisors is an integer number (28414387995).

Almost surely, 2^56828775989 is an apocalyptic number.

It is an amenable number.

56828775989 is a deficient number, since it is larger than the sum of its proper divisors (1).

56828775989 is an equidigital number, since it uses as much as digits as its factorization.

56828775989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 609638400, while the sum is 74.

The spelling of 56828775989 in words is "fifty-six billion, eight hundred twenty-eight million, seven hundred seventy-five thousand, nine hundred eighty-nine".