56680638163 has 2 divisors, whose sum is σ = 56680638164. Its totient is φ = 56680638162.

The previous prime is 56680638151. The next prime is 56680638191. The reversal of 56680638163 is 36183608665.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56680638163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56680638163.

It is not a weakly prime, because it can be changed into another prime (56680638193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28340319081 + 28340319082.

It is an arithmetic number, because the mean of its divisors is an integer number (28340319082).

Almost surely, 2^56680638163 is an apocalyptic number.

56680638163 is a deficient number, since it is larger than the sum of its proper divisors (1).

56680638163 is an equidigital number, since it uses as much as digits as its factorization.

56680638163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 56680638163 in words is "fifty-six billion, six hundred eighty million, six hundred thirty-eight thousand, one hundred sixty-three".