161271116 has 6 divisors (see below), whose sum is σ = 282224460. Its totient is φ = 80635556.

The previous prime is 161271109. The next prime is 161271127. The reversal of 161271116 is 611172161.

It is a happy number.

161271116 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20158886 + ... + 20158893.

It is an arithmetic number, because the mean of its divisors is an integer number (47037410).

Almost surely, 2^161271116 is an apocalyptic number.

It is an amenable number.

161271116 is a deficient number, since it is larger than the sum of its proper divisors (120953344).

161271116 is a wasteful number, since it uses less digits than its factorization.

161271116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40317783 (or 40317781 counting only the distinct ones).

The product of its digits is 504, while the sum is 26.

The square root of 161271116 is about 12699.2565136704. The cubic root of 161271116 is about 544.3173744574.

The spelling of 161271116 in words is "one hundred sixty-one million, two hundred seventy-one thousand, one hundred sixteen".