56611485361 has 2 divisors, whose sum is σ = 56611485362. Its totient is φ = 56611485360.

The previous prime is 56611485331. The next prime is 56611485373. The reversal of 56611485361 is 16358411665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55382562225 + 1228923136 = 235335^2 + 35056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56611485361 is a prime.

It is not a weakly prime, because it can be changed into another prime (56611485311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28305742680 + 28305742681.

It is an arithmetic number, because the mean of its divisors is an integer number (28305742681).

Almost surely, 2^56611485361 is an apocalyptic number.

It is an amenable number.

56611485361 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611485361 is an equidigital number, since it uses as much as digits as its factorization.

56611485361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 46.

The spelling of 56611485361 in words is "fifty-six billion, six hundred eleven million, four hundred eighty-five thousand, three hundred sixty-one".