205533455354413 has 2 divisors, whose sum is σ = 205533455354414. Its totient is φ = 205533455354412.

The previous prime is 205533455354281. The next prime is 205533455354441. The reversal of 205533455354413 is 314453554335502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204206300665929 + 1327154688484 = 14290077^2 + 1152022^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205533455354413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205533455354453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102766727677206 + 102766727677207.

It is an arithmetic number, because the mean of its divisors is an integer number (102766727677207).

Almost surely, 2^{205533455354413} is an apocalyptic number.

It is an amenable number.

205533455354413 is a deficient number, since it is larger than the sum of its proper divisors (1).

205533455354413 is an equidigital number, since it uses as much as digits as its factorization.

205533455354413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400000, while the sum is 52.

The spelling of 205533455354413 in words is "two hundred five trillion, five hundred thirty-three billion, four hundred fifty-five million, three hundred fifty-four thousand, four hundred thirteen".