166160635673 has 2 divisors, whose sum is σ = 166160635674. Its totient is φ = 166160635672.

The previous prime is 166160635657. The next prime is 166160635687. The reversal of 166160635673 is 376536061661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109102714249 + 57057921424 = 330307^2 + 238868^2 .

It is a cyclic number.

It is not a de Polignac number, because 166160635673 - 2⁴ = 166160635657 is a prime.

It is not a weakly prime, because it can be changed into another prime (166160635073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83080317836 + 83080317837.

It is an arithmetic number, because the mean of its divisors is an integer number (83080317837).

Almost surely, 2^166160635673 is an apocalyptic number.

It is an amenable number.

166160635673 is a deficient number, since it is larger than the sum of its proper divisors (1).

166160635673 is an equidigital number, since it uses as much as digits as its factorization.

166160635673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 166160635673 in words is "one hundred sixty-six billion, one hundred sixty million, six hundred thirty-five thousand, six hundred seventy-three".