56648442197 has 2 divisors, whose sum is σ = 56648442198. Its totient is φ = 56648442196.

The previous prime is 56648442187. The next prime is 56648442229. The reversal of 56648442197 is 79124484665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56639716081 + 8726116 = 237991^2 + 2954^2 .

It is a cyclic number.

It is not a de Polignac number, because 56648442197 - 2²⁸ = 56380006741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56648442167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28324221098 + 28324221099.

It is an arithmetic number, because the mean of its divisors is an integer number (28324221099).

Almost surely, 2^56648442197 is an apocalyptic number.

It is an amenable number.

56648442197 is a deficient number, since it is larger than the sum of its proper divisors (1).

56648442197 is an equidigital number, since it uses as much as digits as its factorization.

56648442197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 56.

The spelling of 56648442197 in words is "fifty-six billion, six hundred forty-eight million, four hundred forty-two thousand, one hundred ninety-seven".