56611464961 has 2 divisors, whose sum is σ = 56611464962. Its totient is φ = 56611464960.

The previous prime is 56611464929. The next prime is 56611465003. The reversal of 56611464961 is 16946411665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49186368400 + 7425096561 = 221780^2 + 86169^2 .

It is a cyclic number.

It is not a de Polignac number, because 56611464961 - 2⁵ = 56611464929 is a prime.

It is not a weakly prime, because it can be changed into another prime (56611464661) 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 as a sum of consecutive naturals, namely, 28305732480 + 28305732481.

It is an arithmetic number, because the mean of its divisors is an integer number (28305732481).

Almost surely, 2^56611464961 is an apocalyptic number.

It is an amenable number.

56611464961 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611464961 is an equidigital number, since it uses as much as digits as its factorization.

56611464961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The spelling of 56611464961 in words is "fifty-six billion, six hundred eleven million, four hundred sixty-four thousand, nine hundred sixty-one".