161161012 has 12 divisors (see below), whose sum is σ = 283721760. Its totient is φ = 80097656.

The previous prime is 161160997. The next prime is 161161043. The reversal of 161161012 is 210161161.

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, 119962 + ... + 121297.

It is an arithmetic number, because the mean of its divisors is an integer number (23643480).

Almost surely, 2^161161012 is an apocalyptic number.

It is an amenable number.

161161012 is a deficient number, since it is larger than the sum of its proper divisors (122560748).

161161012 is a wasteful number, since it uses less digits than its factorization.

161161012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241430 (or 241428 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 161161012 is about 12694.9207165701. The cubic root of 161161012 is about 544.1934730302.

The spelling of 161161012 in words is "one hundred sixty-one million, one hundred sixty-one thousand, twelve".