204113123520413 has 2 divisors, whose sum is σ = 204113123520414. Its totient is φ = 204113123520412.

The previous prime is 204113123520377. The next prime is 204113123520431. The reversal of 204113123520413 is 314025321311402.

It is a happy number.

Together with next prime (204113123520431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199905156443524 + 4207967076889 = 14138782^2 + 2051333^2 .

It is a cyclic number.

It is not a de Polignac number, because 204113123520413 - 2⁶ = 204113123520349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204113123520413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204113123420413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102056561760206 + 102056561760207.

It is an arithmetic number, because the mean of its divisors is an integer number (102056561760207).

Almost surely, 2^{204113123520413} is an apocalyptic number.

It is an amenable number.

204113123520413 is a deficient number, since it is larger than the sum of its proper divisors (1).

204113123520413 is an equidigital number, since it uses as much as digits as its factorization.

204113123520413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 204113123520413 its reverse (314025321311402), we get a palindrome (518138444831815).

The spelling of 204113123520413 in words is "two hundred four trillion, one hundred thirteen billion, one hundred twenty-three million, five hundred twenty thousand, four hundred thirteen".