171904164812 has 12 divisors (see below), whose sum is σ = 300939024120. Its totient is φ = 85921586496.

The previous prime is 171904164791. The next prime is 171904164847. The reversal of 171904164812 is 218461409171.

171904164812 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×171904164812² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7611293 + ... + 7633844.

It is an arithmetic number, because the mean of its divisors is an integer number (25078252010).

Almost surely, 2^171904164812 is an apocalyptic number.

It is an amenable number.

171904164812 is a deficient number, since it is larger than the sum of its proper divisors (129034859308).

171904164812 is a wasteful number, since it uses less digits than its factorization.

171904164812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15247960 (or 15247958 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 171904164812 in words is "one hundred seventy-one billion, nine hundred four million, one hundred sixty-four thousand, eight hundred twelve".