656403610963 has 2 divisors, whose sum is σ = 656403610964. Its totient is φ = 656403610962.

The previous prime is 656403610937. The next prime is 656403610979. The reversal of 656403610963 is 369016304656.

656403610963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 656403610963 - 2¹⁷ = 656403479891 is a prime.

It is not a weakly prime, because it can be changed into another prime (656403610903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328201805481 + 328201805482.

It is an arithmetic number, because the mean of its divisors is an integer number (328201805482).

Almost surely, 2^656403610963 is an apocalyptic number.

656403610963 is a deficient number, since it is larger than the sum of its proper divisors (1).

656403610963 is an equidigital number, since it uses as much as digits as its factorization.

656403610963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 49.

The spelling of 656403610963 in words is "six hundred fifty-six billion, four hundred three million, six hundred ten thousand, nine hundred sixty-three".