161065166 has 16 divisors (see below), whose sum is σ = 254662800. Its totient is φ = 76189248.

The previous prime is 161065153. The next prime is 161065183. The reversal of 161065166 is 661560161.

161065166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29930 + ... + 34898.

It is an arithmetic number, because the mean of its divisors is an integer number (15916425).

Almost surely, 2^161065166 is an apocalyptic number.

161065166 is a deficient number, since it is larger than the sum of its proper divisors (93597634).

161065166 is a wasteful number, since it uses less digits than its factorization.

161065166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5843.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 161065166 is about 12691.1451807944. The cubic root of 161065166 is about 544.0855703591.

The spelling of 161065166 in words is "one hundred sixty-one million, sixty-five thousand, one hundred sixty-six".