56611104689 has 2 divisors, whose sum is σ = 56611104690. Its totient is φ = 56611104688.

The previous prime is 56611104673. The next prime is 56611104757. The reversal of 56611104689 is 98640111665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33482778289 + 23128326400 = 182983^2 + 152080^2 .

It is a cyclic number.

It is not a de Polignac number, because 56611104689 - 2⁴ = 56611104673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (56611104629) 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, 28305552344 + 28305552345.

It is an arithmetic number, because the mean of its divisors is an integer number (28305552345).

Almost surely, 2^56611104689 is an apocalyptic number.

It is an amenable number.

56611104689 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611104689 is an equidigital number, since it uses as much as digits as its factorization.

56611104689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The spelling of 56611104689 in words is "fifty-six billion, six hundred eleven million, one hundred four thousand, six hundred eighty-nine".