205063386088901 has 2 divisors, whose sum is σ = 205063386088902. Its totient is φ = 205063386088900.

The previous prime is 205063386088859. The next prime is 205063386088961. The reversal of 205063386088901 is 109880683360502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163023075266401 + 42040310822500 = 12768049^2 + 6483850^2 .

It is a cyclic number.

It is not a de Polignac number, because 205063386088901 - 2¹⁸ = 205063385826757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205063386088961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102531693044450 + 102531693044451.

It is an arithmetic number, because the mean of its divisors is an integer number (102531693044451).

Almost surely, 2^{205063386088901} is an apocalyptic number.

It is an amenable number.

205063386088901 is a deficient number, since it is larger than the sum of its proper divisors (1).

205063386088901 is an equidigital number, since it uses as much as digits as its factorization.

205063386088901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 59.

The spelling of 205063386088901 in words is "two hundred five trillion, sixty-three billion, three hundred eighty-six million, eighty-eight thousand, nine hundred one".