166443217104 has 20 divisors (see below), whose sum is σ = 429978310976. Its totient is φ = 55481072352.

The previous prime is 166443217097. The next prime is 166443217117. The reversal of 166443217104 is 401712344661.

It is a congruent number.

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, 1733783464 + ... + 1733783559.

Almost surely, 2^166443217104 is an apocalyptic number.

It is an amenable number.

166443217104 is an abundant number, since it is smaller than the sum of its proper divisors (263535093872).

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

166443217104 is a wasteful number, since it uses less digits than its factorization.

166443217104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467567034 (or 3467567028 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The spelling of 166443217104 in words is "one hundred sixty-six billion, four hundred forty-three million, two hundred seventeen thousand, one hundred four".