161132566 has 16 divisors (see below), whose sum is σ = 277678080. Its totient is φ = 68694120.

The previous prime is 161132563. The next prime is 161132581. The reversal of 161132566 is 665231161.

161132566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161132563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27456 + ... + 32803.

It is an arithmetic number, because the mean of its divisors is an integer number (17354880).

Almost surely, 2^161132566 is an apocalyptic number.

161132566 is a deficient number, since it is larger than the sum of its proper divisors (116545514).

161132566 is a wasteful number, since it uses less digits than its factorization.

161132566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60459.

The product of its digits is 6480, while the sum is 31.

The square root of 161132566 is about 12693.8002977832. The cubic root of 161132566 is about 544.1614532131.

The spelling of 161132566 in words is "one hundred sixty-one million, one hundred thirty-two thousand, five hundred sixty-six".