166314968971 has 2 divisors, whose sum is σ = 166314968972. Its totient is φ = 166314968970.

The previous prime is 166314968959. The next prime is 166314968993. The reversal of 166314968971 is 179869413661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166314968971 - 2⁹ = 166314968459 is a prime.

It is not a weakly prime, because it can be changed into another prime (166314968951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83157484485 + 83157484486.

It is an arithmetic number, because the mean of its divisors is an integer number (83157484486).

Almost surely, 2^166314968971 is an apocalyptic number.

166314968971 is a deficient number, since it is larger than the sum of its proper divisors (1).

166314968971 is an equidigital number, since it uses as much as digits as its factorization.

166314968971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 61.

The spelling of 166314968971 in words is "one hundred sixty-six billion, three hundred fourteen million, nine hundred sixty-eight thousand, nine hundred seventy-one".