161097264 has 60 divisors (see below), whose sum is σ = 461351176. Its totient is φ = 52448256.

The previous prime is 161097239. The next prime is 161097281. The reversal of 161097264 is 462790161.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6817 + ... + 19200.

Almost surely, 2^161097264 is an apocalyptic number.

It is an amenable number.

161097264 is an abundant number, since it is smaller than the sum of its proper divisors (300253912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161097264 is a wasteful number, since it uses less digits than its factorization.

161097264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26074 (or 26065 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 161097264 is about 12692.4097002894. The cubic root of 161097264 is about 544.1217108007.

The spelling of 161097264 in words is "one hundred sixty-one million, ninety-seven thousand, two hundred sixty-four".