161779264 has 28 divisors (see below), whose sum is σ = 327867264. Its totient is φ = 79167104.

The previous prime is 161779249. The next prime is 161779271. The reversal of 161779264 is 462977161.

161779264 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161779264.

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, 23884 + ... + 29899.

Almost surely, 2^161779264 is an apocalyptic number.

It is an amenable number.

161779264 is an abundant number, since it is smaller than the sum of its proper divisors (166088000).

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

161779264 is an equidigital number, since it uses as much as digits as its factorization.

161779264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53842 (or 53832 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 161779264 is about 12719.2477765000. The cubic root of 161779264 is about 544.8884702902. Note that the first 3 decimals are identical.

The spelling of 161779264 in words is "one hundred sixty-one million, seven hundred seventy-nine thousand, two hundred sixty-four".