166634162710157 has 2 divisors, whose sum is σ = 166634162710158. Its totient is φ = 166634162710156.

The previous prime is 166634162710151. The next prime is 166634162710187. The reversal of 166634162710157 is 751017261436661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123882821230756 + 42751341479401 = 11130266^2 + 6538451^2 .

It is a cyclic number.

It is not a de Polignac number, because 166634162710157 - 2⁸ = 166634162709901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166634162710151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83317081355078 + 83317081355079.

It is an arithmetic number, because the mean of its divisors is an integer number (83317081355079).

Almost surely, 2^{166634162710157} is an apocalyptic number.

It is an amenable number.

166634162710157 is a deficient number, since it is larger than the sum of its proper divisors (1).

166634162710157 is an equidigital number, since it uses as much as digits as its factorization.

166634162710157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 166634162710157 in words is "one hundred sixty-six trillion, six hundred thirty-four billion, one hundred sixty-two million, seven hundred ten thousand, one hundred fifty-seven".