166863158552 has 64 divisors (see below), whose sum is σ = 327181140000. Its totient is φ = 79700530176.

The previous prime is 166863158513. The next prime is 166863158573. The reversal of 166863158552 is 255851368661.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14961074 + ... + 14972222.

Almost surely, 2^166863158552 is an apocalyptic number.

It is an amenable number.

166863158552 is a deficient number, since it is larger than the sum of its proper divisors (160317981448).

166863158552 is a wasteful number, since it uses less digits than its factorization.

166863158552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12108 (or 12104 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 56.

The spelling of 166863158552 in words is "one hundred sixty-six billion, eight hundred sixty-three million, one hundred fifty-eight thousand, five hundred fifty-two".