161266444 has 6 divisors (see below), whose sum is σ = 282216284. Its totient is φ = 80633220.

The previous prime is 161266429. The next prime is 161266451. The reversal of 161266444 is 444662161.

161266444 is digitally balanced in base 2 and base 3, because in such bases 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, 20158302 + ... + 20158309.

Almost surely, 2^161266444 is an apocalyptic number.

It is an amenable number.

161266444 is a deficient number, since it is larger than the sum of its proper divisors (120949840).

161266444 is a wasteful number, since it uses less digits than its factorization.

161266444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40316615 (or 40316613 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 161266444 is about 12699.0725645616. The cubic root of 161266444 is about 544.3121181425.

The spelling of 161266444 in words is "one hundred sixty-one million, two hundred sixty-six thousand, four hundred forty-four".