216816116 has 12 divisors (see below), whose sum is σ = 413921760. Its totient is φ = 98552760.

The previous prime is 216816109. The next prime is 216816121. The reversal of 216816116 is 611618612.

It is a congruent number.

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, 2463776 + ... + 2463863.

It is an arithmetic number, because the mean of its divisors is an integer number (34493480).

Almost surely, 2^216816116 is an apocalyptic number.

It is an amenable number.

216816116 is a deficient number, since it is larger than the sum of its proper divisors (197105644).

216816116 is a wasteful number, since it uses less digits than its factorization.

216816116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927654 (or 4927652 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 216816116 is about 14724.6771102120. The cubic root of 216816116 is about 600.7547132448.

The spelling of 216816116 in words is "two hundred sixteen million, eight hundred sixteen thousand, one hundred sixteen".