216040016 has 10 divisors (see below), whose sum is σ = 418577562. Its totient is φ = 108020000.

The previous prime is 216039997. The next prime is 216040039. The reversal of 216040016 is 610040612.

It is a happy number.

216040016 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 215972416 + 67600 = 14696^2 + 260^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 216040016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6751235 + ... + 6751266.

Almost surely, 2^216040016 is an apocalyptic number.

It is an amenable number.

216040016 is a deficient number, since it is larger than the sum of its proper divisors (202537546).

216040016 is a wasteful number, since it uses less digits than its factorization.

216040016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13502509 (or 13502503 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 216040016 is about 14698.2997656192. The cubic root of 216040016 is about 600.0370495640.

Adding to 216040016 its reverse (610040612), we get a palindrome (826080628).

The spelling of 216040016 in words is "two hundred sixteen million, forty thousand, sixteen".