56160646561 has 2 divisors, whose sum is σ = 56160646562. Its totient is φ = 56160646560.

The previous prime is 56160646541. The next prime is 56160646571. The reversal of 56160646561 is 16564606165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55873140625 + 287505936 = 236375^2 + 16956^2 .

It is a cyclic number.

It is not a de Polignac number, because 56160646561 - 2¹¹ = 56160644513 is a prime.

It is a super-2 number, since 2×56160646561² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56160646541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28080323280 + 28080323281.

It is an arithmetic number, because the mean of its divisors is an integer number (28080323281).

Almost surely, 2^56160646561 is an apocalyptic number.

It is an amenable number.

56160646561 is a deficient number, since it is larger than the sum of its proper divisors (1).

56160646561 is an equidigital number, since it uses as much as digits as its factorization.

56160646561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 56160646561 in words is "fifty-six billion, one hundred sixty million, six hundred forty-six thousand, five hundred sixty-one".