659493394961 has 2 divisors, whose sum is σ = 659493394962. Its totient is φ = 659493394960.

The previous prime is 659493394949. The next prime is 659493394997. The reversal of 659493394961 is 169493394956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588020580625 + 71472814336 = 766825^2 + 267344^2 .

It is a cyclic number.

It is not a de Polignac number, because 659493394961 - 2²⁶ = 659426286097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 659493394891 and 659493394900.

It is not a weakly prime, because it can be changed into another prime (659493394661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329746697480 + 329746697481.

It is an arithmetic number, because the mean of its divisors is an integer number (329746697481).

Almost surely, 2^659493394961 is an apocalyptic number.

It is an amenable number.

659493394961 is a deficient number, since it is larger than the sum of its proper divisors (1).

659493394961 is an equidigital number, since it uses as much as digits as its factorization.

659493394961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170061120, while the sum is 68.

The spelling of 659493394961 in words is "six hundred fifty-nine billion, four hundred ninety-three million, three hundred ninety-four thousand, nine hundred sixty-one".