204384016404 has 36 divisors (see below), whose sum is σ = 516656838880. Its totient is φ = 68125438800.

The previous prime is 204384016399. The next prime is 204384016439. The reversal of 204384016404 is 404610483402.

204384016404 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 8 + 4 + 0 + 1 + 640 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×204384016404² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1026417 + ... + 1209255.

Almost surely, 2^204384016404 is an apocalyptic number.

It is an amenable number.

204384016404 is an abundant number, since it is smaller than the sum of its proper divisors (312272822476).

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

204384016404 is a wasteful number, since it uses less digits than its factorization.

204384016404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213900 (or 213895 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

Adding to 204384016404 its reverse (404610483402), we get a palindrome (608994499806).

The spelling of 204384016404 in words is "two hundred four billion, three hundred eighty-four million, sixteen thousand, four hundred four".