166923792907 has 2 divisors, whose sum is σ = 166923792908. Its totient is φ = 166923792906.

The previous prime is 166923792851. The next prime is 166923792929. The reversal of 166923792907 is 709297329661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166923792907 is a prime.

It is not a weakly prime, because it can be changed into another prime (166923792977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83461896453 + 83461896454.

It is an arithmetic number, because the mean of its divisors is an integer number (83461896454).

Almost surely, 2^166923792907 is an apocalyptic number.

166923792907 is a deficient number, since it is larger than the sum of its proper divisors (1).

166923792907 is an equidigital number, since it uses as much as digits as its factorization.

166923792907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15431472, while the sum is 61.

The spelling of 166923792907 in words is "one hundred sixty-six billion, nine hundred twenty-three million, seven hundred ninety-two thousand, nine hundred seven".