204113123520426 has 12 divisors (see below), whose sum is σ = 442245100960962. Its totient is φ = 68037707840136.

The previous prime is 204113123520413. The next prime is 204113123520431. The reversal of 204113123520426 is 624025321311402.

It is a happy number.

204113123520426 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 1 + 3 + 123 + 520 + 4 + 2 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 172451131164225 + 31661992356201 = 13132065^2 + 5626899^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5669808986661 + ... + 5669808986696.

Almost surely, 2^{204113123520426} is an apocalyptic number.

204113123520426 is an abundant number, since it is smaller than the sum of its proper divisors (238131977440536).

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

204113123520426 is a wasteful number, since it uses less digits than its factorization.

204113123520426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11339617973365 (or 11339617973362 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 204113123520426 its reverse (624025321311402), we get a palindrome (828138444831828).

The spelling of 204113123520426 in words is "two hundred four trillion, one hundred thirteen billion, one hundred twenty-three million, five hundred twenty thousand, four hundred twenty-six".