166223958328 has 16 divisors (see below), whose sum is σ = 322417161000. Its totient is φ = 80246048736.

The previous prime is 166223958293. The next prime is 166223958361. The reversal of 166223958328 is 823859322661.

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, 358241058 + ... + 358241521.

Almost surely, 2^166223958328 is an apocalyptic number.

It is an amenable number.

166223958328 is a deficient number, since it is larger than the sum of its proper divisors (156193202672).

166223958328 is a wasteful number, since it uses less digits than its factorization.

166223958328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716482614 (or 716482610 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The spelling of 166223958328 in words is "one hundred sixty-six billion, two hundred twenty-three million, nine hundred fifty-eight thousand, three hundred twenty-eight".