205637610332243 has 2 divisors, whose sum is σ = 205637610332244. Its totient is φ = 205637610332242.

The previous prime is 205637610332179. The next prime is 205637610332257. The reversal of 205637610332243 is 342233016736502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205637610332243 - 2⁶ = 205637610332179 is a prime.

It is a super-2 number, since 2×205637610332243² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205637610332543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102818805166121 + 102818805166122.

It is an arithmetic number, because the mean of its divisors is an integer number (102818805166122).

Almost surely, 2^{205637610332243} is an apocalyptic number.

205637610332243 is a deficient number, since it is larger than the sum of its proper divisors (1).

205637610332243 is an equidigital number, since it uses as much as digits as its factorization.

205637610332243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 47.

The spelling of 205637610332243 in words is "two hundred five trillion, six hundred thirty-seven billion, six hundred ten million, three hundred thirty-two thousand, two hundred forty-three".