204221403434424 has 64 divisors (see below), whose sum is σ = 524709636675840. Its totient is φ = 66197133930240.

The previous prime is 204221403434357. The next prime is 204221403434443. The reversal of 204221403434424 is 424434304122402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337714324 + ... + 338318499.

It is an arithmetic number, because the mean of its divisors is an integer number (8198588073060).

Almost surely, 2^{204221403434424} is an apocalyptic number.

204221403434424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204221403434424 is an abundant number, since it is smaller than the sum of its proper divisors (320488233241416).

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

204221403434424 is a wasteful number, since it uses less digits than its factorization.

204221403434424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676033180 (or 676033176 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 39.

Adding to 204221403434424 its reverse (424434304122402), we get a palindrome (628655707556826).

The spelling of 204221403434424 in words is "two hundred four trillion, two hundred twenty-one billion, four hundred three million, four hundred thirty-four thousand, four hundred twenty-four".