216039105 has 24 divisors (see below), whose sum is σ = 374969088. Its totient is φ = 115066656.

The previous prime is 216039071. The next prime is 216039107. The reversal of 216039105 is 501930612.

216039105 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 216039105 - 2¹² = 216035009 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (216039107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36054 + ... + 41616.

It is an arithmetic number, because the mean of its divisors is an integer number (15623712).

Almost surely, 2^216039105 is an apocalyptic number.

It is an amenable number.

216039105 is a deficient number, since it is larger than the sum of its proper divisors (158929983).

216039105 is a wasteful number, since it uses less digits than its factorization.

216039105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437 (or 6434 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 216039105 is about 14698.2687756076. The cubic root of 216039105 is about 600.0362061485.

Adding to 216039105 its reverse (501930612), we get a palindrome (717969717).

The spelling of 216039105 in words is "two hundred sixteen million, thirty-nine thousand, one hundred five".