216045015 has 16 divisors (see below), whose sum is σ = 346858848. Its totient is φ = 114828416.

The previous prime is 216045001. The next prime is 216045023. The reversal of 216045015 is 510540612.

It is a cyclic number.

It is not a de Polignac number, because 216045015 - 2⁴ = 216044999 is a prime.

It is a congruent 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, 20184 + ... + 28973.

It is an arithmetic number, because the mean of its divisors is an integer number (21678678).

Almost surely, 2^216045015 is an apocalyptic number.

216045015 is a deficient number, since it is larger than the sum of its proper divisors (130813833).

216045015 is a wasteful number, since it uses less digits than its factorization.

216045015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49458.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 216045015 is about 14698.4698183178. The cubic root of 216045015 is about 600.0416776604.

Adding to 216045015 its reverse (510540612), we get a palindrome (726585627).

The spelling of 216045015 in words is "two hundred sixteen million, forty-five thousand, fifteen".