266520546341201 has 2 divisors, whose sum is σ = 266520546341202. Its totient is φ = 266520546341200.

The previous prime is 266520546341123. The next prime is 266520546341209. The reversal of 266520546341201 is 102143645025662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 260395668768400 + 6124877572801 = 16136780^2 + 2474849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-266520546341201 is a prime.

It is not a weakly prime, because it can be changed into another prime (266520546341209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133260273170600 + 133260273170601.

It is an arithmetic number, because the mean of its divisors is an integer number (133260273170601).

Almost surely, 2^{266520546341201} is an apocalyptic number.

It is an amenable number.

266520546341201 is a deficient number, since it is larger than the sum of its proper divisors (1).

266520546341201 is an equidigital number, since it uses as much as digits as its factorization.

266520546341201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 266520546341201 in words is "two hundred sixty-six trillion, five hundred twenty billion, five hundred forty-six million, three hundred forty-one thousand, two hundred one".