205041042347 has 2 divisors, whose sum is σ = 205041042348. Its totient is φ = 205041042346.

The previous prime is 205041042337. The next prime is 205041042463. The reversal of 205041042347 is 743240140502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205041042347 - 2⁴ = 205041042331 is a prime.

It is not a weakly prime, because it can be changed into another prime (205041042337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102520521173 + 102520521174.

It is an arithmetic number, because the mean of its divisors is an integer number (102520521174).

Almost surely, 2^205041042347 is an apocalyptic number.

205041042347 is a deficient number, since it is larger than the sum of its proper divisors (1).

205041042347 is an equidigital number, since it uses as much as digits as its factorization.

205041042347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 205041042347 its reverse (743240140502), we get a palindrome (948281182849).

The spelling of 205041042347 in words is "two hundred five billion, forty-one million, forty-two thousand, three hundred forty-seven".