204563144413 has 2 divisors, whose sum is σ = 204563144414. Its totient is φ = 204563144412.

The previous prime is 204563144393. The next prime is 204563144473. The reversal of 204563144413 is 314441365402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112373789284 + 92189355129 = 335222^2 + 303627^2 .

It is a cyclic number.

It is not a de Polignac number, because 204563144413 - 2⁵ = 204563144381 is a prime.

It is a super-2 number, since 2×204563144413² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204563144473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102281572206 + 102281572207.

It is an arithmetic number, because the mean of its divisors is an integer number (102281572207).

Almost surely, 2^204563144413 is an apocalyptic number.

It is an amenable number.

204563144413 is a deficient number, since it is larger than the sum of its proper divisors (1).

204563144413 is an equidigital number, since it uses as much as digits as its factorization.

204563144413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 204563144413 in words is "two hundred four billion, five hundred sixty-three million, one hundred forty-four thousand, four hundred thirteen".