266043540525241 has 2 divisors, whose sum is σ = 266043540525242. Its totient is φ = 266043540525240.

The previous prime is 266043540525209. The next prime is 266043540525247. The reversal of 266043540525241 is 142525045340662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245417446298025 + 20626094227216 = 15665805^2 + 4541596^2 .

It is a cyclic number.

It is not a de Polignac number, because 266043540525241 - 2⁵ = 266043540525209 is a prime.

It is not a weakly prime, because it can be changed into another prime (266043540525247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133021770262620 + 133021770262621.

It is an arithmetic number, because the mean of its divisors is an integer number (133021770262621).

Almost surely, 2^{266043540525241} is an apocalyptic number.

It is an amenable number.

266043540525241 is a deficient number, since it is larger than the sum of its proper divisors (1).

266043540525241 is an equidigital number, since it uses as much as digits as its factorization.

266043540525241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 266043540525241 in words is "two hundred sixty-six trillion, forty-three billion, five hundred forty million, five hundred twenty-five thousand, two hundred forty-one".