161005112 has 16 divisors (see below), whose sum is σ = 304557840. Its totient is φ = 79789696.

The previous prime is 161005049. The next prime is 161005133. The reversal of 161005112 is 211500161.

161005112 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 3 ways as a sum of consecutive naturals, for example, 88148 + ... + 89955.

It is an arithmetic number, because the mean of its divisors is an integer number (19034865).

Almost surely, 2^161005112 is an apocalyptic number.

It is an amenable number.

161005112 is a deficient number, since it is larger than the sum of its proper divisors (143552728).

161005112 is a wasteful number, since it uses less digits than its factorization.

161005112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178222 (or 178218 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 161005112 is about 12688.7789798704. The cubic root of 161005112 is about 544.0179402244.

Adding to 161005112 its reverse (211500161), we get a palindrome (372505273).

It can be divided in two parts, 16100 and 5112, that added together give a palindrome (21212).

The spelling of 161005112 in words is "one hundred sixty-one million, five thousand, one hundred twelve".