204434120413 has 2 divisors, whose sum is σ = 204434120414. Its totient is φ = 204434120412.

The previous prime is 204434120399. The next prime is 204434120417. The reversal of 204434120413 is 314021434402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135392353849 + 69041766564 = 367957^2 + 262758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204434120413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204434120417) 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 as a sum of consecutive naturals, namely, 102217060206 + 102217060207.

It is an arithmetic number, because the mean of its divisors is an integer number (102217060207).

Almost surely, 2^204434120413 is an apocalyptic number.

It is an amenable number.

204434120413 is a deficient number, since it is larger than the sum of its proper divisors (1).

204434120413 is an equidigital number, since it uses as much as digits as its factorization.

204434120413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 204434120413 its reverse (314021434402), we get a palindrome (518455554815).

The spelling of 204434120413 in words is "two hundred four billion, four hundred thirty-four million, one hundred twenty thousand, four hundred thirteen".