538206118551811 has 2 divisors, whose sum is σ = 538206118551812. Its totient is φ = 538206118551810.

The previous prime is 538206118551799. The next prime is 538206118551833. The reversal of 538206118551811 is 118155811602835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 538206118551811 - 2³¹ = 538203971068163 is a prime.

It is not a weakly prime, because it can be changed into another prime (538206118551841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269103059275905 + 269103059275906.

It is an arithmetic number, because the mean of its divisors is an integer number (269103059275906).

Almost surely, 2^{538206118551811} is an apocalyptic number.

538206118551811 is a deficient number, since it is larger than the sum of its proper divisors (1).

538206118551811 is an equidigital number, since it uses as much as digits as its factorization.

538206118551811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304000, while the sum is 55.

The spelling of 538206118551811 in words is "five hundred thirty-eight trillion, two hundred six billion, one hundred eighteen million, five hundred fifty-one thousand, eight hundred eleven".