166051611156 has 12 divisors (see below), whose sum is σ = 387453759392. Its totient is φ = 55350537048.

The previous prime is 166051611137. The next prime is 166051611163. The reversal of 166051611156 is 651116150661.

It is a tau number, because it is divible by the number of its divisors (12).

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, 6918817120 + ... + 6918817143.

Almost surely, 2^166051611156 is an apocalyptic number.

It is an amenable number.

166051611156 is an abundant number, since it is smaller than the sum of its proper divisors (221402148236).

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

166051611156 is a wasteful number, since it uses less digits than its factorization.

166051611156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13837634270 (or 13837634268 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 166051611156 in words is "one hundred sixty-six billion, fifty-one million, six hundred eleven thousand, one hundred fifty-six".