166561150156 has 12 divisors (see below), whose sum is σ = 306823171480. Its totient is φ = 78897386880.

The previous prime is 166561150097. The next prime is 166561150229. The reversal of 166561150156 is 651051165661.

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, 1095796965 + ... + 1095797116.

Almost surely, 2^166561150156 is an apocalyptic number.

It is an amenable number.

166561150156 is a deficient number, since it is larger than the sum of its proper divisors (140262021324).

166561150156 is a wasteful number, since it uses less digits than its factorization.

166561150156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191594104 (or 2191594102 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 166561150156 in words is "one hundred sixty-six billion, five hundred sixty-one million, one hundred fifty thousand, one hundred fifty-six".