161151112 has 8 divisors (see below), whose sum is σ = 302158350. Its totient is φ = 80575552.

The previous prime is 161151097. The next prime is 161151119. The reversal of 161151112 is 211151161.

It can be written as a sum of positive squares in only one way, i.e., 154107396 + 7043716 = 12414^2 + 2654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 161151112.

It is not an unprimeable number, because it can be changed into a prime (161151119) by changing a digit.

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 as a sum of consecutive naturals, namely, 10071937 + ... + 10071952.

Almost surely, 2^161151112 is an apocalyptic number.

It is an amenable number.

161151112 is a deficient number, since it is larger than the sum of its proper divisors (141007238).

161151112 is a wasteful number, since it uses less digits than its factorization.

161151112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20143895 (or 20143891 counting only the distinct ones).

The product of its digits is 60, while the sum is 19.

The square root of 161151112 is about 12694.5307908564. The cubic root of 161151112 is about 544.1823296699.

The spelling of 161151112 in words is "one hundred sixty-one million, one hundred fifty-one thousand, one hundred twelve".