166505116 has 48 divisors (see below), whose sum is σ = 307692000. Its totient is φ = 78769152.

The previous prime is 166505111. The next prime is 166505137. The reversal of 166505116 is 611505661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166505111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1117410 + ... + 1117558.

It is an arithmetic number, because the mean of its divisors is an integer number (6410250).

Almost surely, 2^166505116 is an apocalyptic number.

It is an amenable number.

166505116 is a deficient number, since it is larger than the sum of its proper divisors (141186884).

166505116 is a wasteful number, since it uses less digits than its factorization.

166505116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 166505116 is about 12903.6861400144. The cubic root of 166505116 is about 550.1433411515.

The spelling of 166505116 in words is "one hundred sixty-six million, five hundred five thousand, one hundred sixteen".