204043434240413 has 2 divisors, whose sum is σ = 204043434240414. Its totient is φ = 204043434240412.

The previous prime is 204043434240409. The next prime is 204043434240439. The reversal of 204043434240413 is 314042434340402.

204043434240413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161423453794009 + 42619980446404 = 12705253^2 + 6528398^2 .

It is a cyclic number.

It is not a de Polignac number, because 204043434240413 - 2² = 204043434240409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204043434240473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102021717120206 + 102021717120207.

It is an arithmetic number, because the mean of its divisors is an integer number (102021717120207).

Almost surely, 2^{204043434240413} is an apocalyptic number.

It is an amenable number.

204043434240413 is a deficient number, since it is larger than the sum of its proper divisors (1).

204043434240413 is an equidigital number, since it uses as much as digits as its factorization.

204043434240413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 38.

Adding to 204043434240413 its reverse (314042434340402), we get a palindrome (518085868580815).

The spelling of 204043434240413 in words is "two hundred four trillion, forty-three billion, four hundred thirty-four million, two hundred forty thousand, four hundred thirteen".