216104503806 has 24 divisors (see below), whose sum is σ = 483330504384. Its totient is φ = 69711130080.

The previous prime is 216104503801. The next prime is 216104503819. The reversal of 216104503806 is 608305401612.

It is a happy number.

216104503806 is a `hidden beast` number, since 2 + 1 + 610 + 4 + 5 + 0 + 38 + 0 + 6 = 666.

216104503806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216104503801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 193641471 + ... + 193642586.

It is an arithmetic number, because the mean of its divisors is an integer number (20138771016).

Almost surely, 2^216104503806 is an apocalyptic number.

216104503806 is an abundant number, since it is smaller than the sum of its proper divisors (267226000578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216104503806 is a wasteful number, since it uses less digits than its factorization.

216104503806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387284096 (or 387284093 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 216104503806 in words is "two hundred sixteen billion, one hundred four million, five hundred three thousand, eight hundred six".