161064445 has 8 divisors (see below), whose sum is σ = 194130144. Its totient is φ = 128283024.

The previous prime is 161064439. The next prime is 161064467. The reversal of 161064445 is 544460161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161064445 - 2⁵ = 161064413 is a prime.

It is a super-3 number, since 3×161064445³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69819 + ... + 72088.

It is an arithmetic number, because the mean of its divisors is an integer number (24266268).

Almost surely, 2^161064445 is an apocalyptic number.

It is an amenable number.

161064445 is a deficient number, since it is larger than the sum of its proper divisors (33065699).

161064445 is a wasteful number, since it uses less digits than its factorization.

161064445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142139.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 161064445 is about 12691.1167751305. The cubic root of 161064445 is about 544.0847585008.

The spelling of 161064445 in words is "one hundred sixty-one million, sixty-four thousand, four hundred forty-five".