216104503804 has 72 divisors (see below), whose sum is σ = 448618746240. Its totient is φ = 90789439104.

The previous prime is 216104503801. The next prime is 216104503819. The reversal of 216104503804 is 408305401612.

It is a self number, because there is not a number n which added to its sum of digits gives 216104503804.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12758389 + ... + 12775315.

It is an arithmetic number, because the mean of its divisors is an integer number (6230815920).

Almost surely, 2^216104503804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216104503804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224309373120).

216104503804 is an abundant number, since it is smaller than the sum of its proper divisors (232514242436).

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

216104503804 is a wasteful number, since it uses less digits than its factorization.

216104503804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18227 (or 18218 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 216104503804 in words is "two hundred sixteen billion, one hundred four million, five hundred three thousand, eight hundred four".