205041205043 has 2 divisors, whose sum is σ = 205041205044. Its totient is φ = 205041205042.

The previous prime is 205041205013. The next prime is 205041205079. The reversal of 205041205043 is 340502140502.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205041205043 is a prime.

It is not a weakly prime, because it can be changed into another prime (205041205003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102520602521 + 102520602522.

It is an arithmetic number, because the mean of its divisors is an integer number (102520602522).

Almost surely, 2^205041205043 is an apocalyptic number.

205041205043 is a deficient number, since it is larger than the sum of its proper divisors (1).

205041205043 is an equidigital number, since it uses as much as digits as its factorization.

205041205043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 205041205043 its reverse (340502140502), we get a palindrome (545543345545).

The spelling of 205041205043 in words is "two hundred five billion, forty-one million, two hundred five thousand, forty-three".