204102135216 has 120 divisors (see below), whose sum is σ = 663867509760. Its totient is φ = 57326491008.

The previous prime is 204102135197. The next prime is 204102135239. The reversal of 204102135216 is 612531201402.

204102135216 is a `hidden beast` number, since 2 + 0 + 410 + 2 + 1 + 35 + 216 = 666.

204102135216 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 204102135216.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1656480 + ... + 1775423.

It is an arithmetic number, because the mean of its divisors is an integer number (5532229248).

Almost surely, 2^204102135216 is an apocalyptic number.

It is an amenable number.

204102135216 is an abundant number, since it is smaller than the sum of its proper divisors (459765374544).

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

204102135216 is a wasteful number, since it uses less digits than its factorization.

204102135216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431983 (or 3431974 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 204102135216 its reverse (612531201402), we get a palindrome (816633336618).

The spelling of 204102135216 in words is "two hundred four billion, one hundred two million, one hundred thirty-five thousand, two hundred sixteen".