205054040011 has 2 divisors, whose sum is σ = 205054040012. Its totient is φ = 205054040010.

The previous prime is 205054039991. The next prime is 205054040027. The reversal of 205054040011 is 110040450502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205054040011 - 2²⁹ = 204517169099 is a prime.

It is not a weakly prime, because it can be changed into another prime (205054043011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102527020005 + 102527020006.

It is an arithmetic number, because the mean of its divisors is an integer number (102527020006).

Almost surely, 2^205054040011 is an apocalyptic number.

205054040011 is a deficient number, since it is larger than the sum of its proper divisors (1).

205054040011 is an equidigital number, since it uses as much as digits as its factorization.

205054040011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 205054040011 its reverse (110040450502), we get a palindrome (315094490513).

The spelling of 205054040011 in words is "two hundred five billion, fifty-four million, forty thousand, eleven".