204434161205 has 16 divisors (see below), whose sum is σ = 259057686720. Its totient is φ = 154444537728.

The previous prime is 204434161199. The next prime is 204434161207. The reversal of 204434161205 is 502161434402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204434161205 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204434161207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3407867 + ... + 3467336.

It is an arithmetic number, because the mean of its divisors is an integer number (16191105420).

Almost surely, 2^204434161205 is an apocalyptic number.

It is an amenable number.

204434161205 is a deficient number, since it is larger than the sum of its proper divisors (54623525515).

204434161205 is a wasteful number, since it uses less digits than its factorization.

204434161205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875540.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 204434161205 its reverse (502161434402), we get a palindrome (706595595607).

The spelling of 204434161205 in words is "two hundred four billion, four hundred thirty-four million, one hundred sixty-one thousand, two hundred five".