161065170 has 48 divisors (see below), whose sum is σ = 478595520. Its totient is φ = 36814752.

The previous prime is 161065153. The next prime is 161065183. The reversal of 161065170 is 71560161.

161065170 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 651 + 7 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127200 + ... + 128459.

It is an arithmetic number, because the mean of its divisors is an integer number (9970740).

Almost surely, 2^161065170 is an apocalyptic number.

161065170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161065170 is an abundant number, since it is smaller than the sum of its proper divisors (317530350).

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

161065170 is a wasteful number, since it uses less digits than its factorization.

161065170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255679 (or 255676 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 161065170 is about 12691.1453383846. The cubic root of 161065170 is about 544.0855748632.

The spelling of 161065170 in words is "one hundred sixty-one million, sixty-five thousand, one hundred seventy".