161230404644 has 12 divisors (see below), whose sum is σ = 282541319424. Its totient is φ = 80504313384.

The previous prime is 161230404631. The next prime is 161230404679. The reversal of 161230404644 is 446404032161.

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, 27718964 + ... + 27724779.

It is an arithmetic number, because the mean of its divisors is an integer number (23545109952).

Almost surely, 2^161230404644 is an apocalyptic number.

It is an amenable number.

161230404644 is a deficient number, since it is larger than the sum of its proper divisors (121310914780).

161230404644 is a wasteful number, since it uses less digits than its factorization.

161230404644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55444474 (or 55444472 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 161230404644 in words is "one hundred sixty-one billion, two hundred thirty million, four hundred four thousand, six hundred forty-four".