166701935123 has 2 divisors, whose sum is σ = 166701935124. Its totient is φ = 166701935122.

The previous prime is 166701935089. The next prime is 166701935189. The reversal of 166701935123 is 321539107661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166701935123 - 2³⁰ = 165628193299 is a prime.

It is not a weakly prime, because it can be changed into another prime (166701635123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83350967561 + 83350967562.

It is an arithmetic number, because the mean of its divisors is an integer number (83350967562).

Almost surely, 2^166701935123 is an apocalyptic number.

166701935123 is a deficient number, since it is larger than the sum of its proper divisors (1).

166701935123 is an equidigital number, since it uses as much as digits as its factorization.

166701935123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 44.

The spelling of 166701935123 in words is "one hundred sixty-six billion, seven hundred one million, nine hundred thirty-five thousand, one hundred twenty-three".