204333121434 has 128 divisors (see below), whose sum is σ = 484143464448. Its totient is φ = 56959246080.

The previous prime is 204333121423. The next prime is 204333121453. The reversal of 204333121434 is 434121333402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2574772 + ... + 2652944.

It is an arithmetic number, because the mean of its divisors is an integer number (3782370816).

Almost surely, 2^204333121434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204333121434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242071732224).

204333121434 is an abundant number, since it is smaller than the sum of its proper divisors (279810343014).

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

204333121434 is a wasteful number, since it uses less digits than its factorization.

204333121434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78292.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 204333121434 its reverse (434121333402), we get a palindrome (638454454836).

The spelling of 204333121434 in words is "two hundred four billion, three hundred thirty-three million, one hundred twenty-one thousand, four hundred thirty-four".