216338628844 has 12 divisors (see below), whose sum is σ = 407715108304. Its totient is φ = 99848597904.

The previous prime is 216338628773. The next prime is 216338628859. The reversal of 216338628844 is 448826833612.

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, 2080179072 + ... + 2080179175.

Almost surely, 2^216338628844 is an apocalyptic number.

It is an amenable number.

216338628844 is a deficient number, since it is larger than the sum of its proper divisors (191376479460).

216338628844 is a wasteful number, since it uses less digits than its factorization.

216338628844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4160358264 (or 4160358262 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 55.

The spelling of 216338628844 in words is "two hundred sixteen billion, three hundred thirty-eight million, six hundred twenty-eight thousand, eight hundred forty-four".