56032661161 has 2 divisors, whose sum is σ = 56032661162. Its totient is φ = 56032661160.

The previous prime is 56032661143. The next prime is 56032661281. The reversal of 56032661161 is 16116623065.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36865920025 + 19166741136 = 192005^2 + 138444^2 .

It is a cyclic number.

It is not a de Polignac number, because 56032661161 - 2⁵ = 56032661129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56032661161.

It is not a weakly prime, because it can be changed into another prime (56032661131) 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, 28016330580 + 28016330581.

It is an arithmetic number, because the mean of its divisors is an integer number (28016330581).

Almost surely, 2^56032661161 is an apocalyptic number.

It is an amenable number.

56032661161 is a deficient number, since it is larger than the sum of its proper divisors (1).

56032661161 is an equidigital number, since it uses as much as digits as its factorization.

56032661161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 56032661161 in words is "fifty-six billion, thirty-two million, six hundred sixty-one thousand, one hundred sixty-one".