216916105 has 16 divisors (see below), whose sum is σ = 310420224. Its totient is φ = 142274880.

The previous prime is 216916099. The next prime is 216916129. The reversal of 216916105 is 501619612.

216916105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216916105 - 2³ = 216916097 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133926 + ... + 135535.

It is an arithmetic number, because the mean of its divisors is an integer number (19401264).

Almost surely, 2^216916105 is an apocalyptic number.

It is an amenable number.

216916105 is a deficient number, since it is larger than the sum of its proper divisors (93504119).

216916105 is a wasteful number, since it uses less digits than its factorization.

216916105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269496.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 216916105 is about 14728.0720055274. The cubic root of 216916105 is about 600.8470489877.

The spelling of 216916105 in words is "two hundred sixteen million, nine hundred sixteen thousand, one hundred five".