166658833375297 has 2 divisors, whose sum is σ = 166658833375298. Its totient is φ = 166658833375296.

The previous prime is 166658833375271. The next prime is 166658833375327. The reversal of 166658833375297 is 792573338856661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156752177845041 + 9906655530256 = 12520071^2 + 3147484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166658833375297 is a prime.

It is not a weakly prime, because it can be changed into another prime (166658833775297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83329416687648 + 83329416687649.

It is an arithmetic number, because the mean of its divisors is an integer number (83329416687649).

Almost surely, 2^{166658833375297} is an apocalyptic number.

It is an amenable number.

166658833375297 is a deficient number, since it is larger than the sum of its proper divisors (1).

166658833375297 is an equidigital number, since it uses as much as digits as its factorization.

166658833375297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8230118400, while the sum is 79.

The spelling of 166658833375297 in words is "one hundred sixty-six trillion, six hundred fifty-eight billion, eight hundred thirty-three million, three hundred seventy-five thousand, two hundred ninety-seven".