205265316343 has 2 divisors, whose sum is σ = 205265316344. Its totient is φ = 205265316342.

The previous prime is 205265316317. The next prime is 205265316349. The reversal of 205265316343 is 343613562502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205265316343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205265316296 and 205265316305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205265316349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102632658171 + 102632658172.

It is an arithmetic number, because the mean of its divisors is an integer number (102632658172).

Almost surely, 2^205265316343 is an apocalyptic number.

205265316343 is a deficient number, since it is larger than the sum of its proper divisors (1).

205265316343 is an equidigital number, since it uses as much as digits as its factorization.

205265316343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 40.

Adding to 205265316343 its reverse (343613562502), we get a palindrome (548878878845).

The spelling of 205265316343 in words is "two hundred five billion, two hundred sixty-five million, three hundred sixteen thousand, three hundred forty-three".