166923792906 has 64 divisors (see below), whose sum is σ = 361576752768. Its totient is φ = 51068844288.

The previous prime is 166923792851. The next prime is 166923792907. The reversal of 166923792906 is 609297329661.

It is a self number, because there is not a number n which added to its sum of digits gives 166923792906.

It is not an unprimeable number, because it can be changed into a prime (166923792907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41593756 + ... + 41597768.

It is an arithmetic number, because the mean of its divisors is an integer number (5649636762).

Almost surely, 2^166923792906 is an apocalyptic number.

166923792906 is an abundant number, since it is smaller than the sum of its proper divisors (194652959862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166923792906 is a wasteful number, since it uses less digits than its factorization.

166923792906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6935.

The product of its (nonzero) digits is 13226976, while the sum is 60.

The spelling of 166923792906 in words is "one hundred sixty-six billion, nine hundred twenty-three million, seven hundred ninety-two thousand, nine hundred six".