204204424056 has 128 divisors (see below), whose sum is σ = 547986600000. Its totient is φ = 63284723712.

The previous prime is 204204424009. The next prime is 204204424063. The reversal of 204204424056 is 650424402402.

It is a super-2 number, since 2×204204424056² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2457070 + ... + 2538818.

Almost surely, 2^204204424056 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 204204424056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273993300000).

204204424056 is an abundant number, since it is smaller than the sum of its proper divisors (343782175944).

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

204204424056 is a wasteful number, since it uses less digits than its factorization.

204204424056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81921 (or 81917 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 204204424056 its reverse (650424402402), we get a palindrome (854628826458).

The spelling of 204204424056 in words is "two hundred four billion, two hundred four million, four hundred twenty-four thousand, fifty-six".