204423213340404 has 72 divisors (see below), whose sum is σ = 520322747992320. Its totient is φ = 67669647702912.

The previous prime is 204423213340393. The next prime is 204423213340439. The reversal of 204423213340404 is 404043312324402.

204423213340404 is a `hidden beast` number, since 2 + 0 + 4 + 4 + 2 + 3 + 213 + 34 + 0 + 404 = 666.

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 23 ways as a sum of consecutive naturals, for example, 27845862 + ... + 34412765.

Almost surely, 2^{204423213340404} is an apocalyptic number.

It is an amenable number.

204423213340404 is an abundant number, since it is smaller than the sum of its proper divisors (315899534651916).

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

204423213340404 is a wasteful number, since it uses less digits than its factorization.

204423213340404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62259269 (or 62259264 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 36.

Adding to 204423213340404 its reverse (404043312324402), we get a palindrome (608466525664806).

The spelling of 204423213340404 in words is "two hundred four trillion, four hundred twenty-three billion, two hundred thirteen million, three hundred forty thousand, four hundred four".