266713641322801 has 2 divisors, whose sum is σ = 266713641322802. Its totient is φ = 266713641322800.

The previous prime is 266713641322789. The next prime is 266713641322829. The reversal of 266713641322801 is 108223146317662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230190039160225 + 36523602162576 = 15172015^2 + 6043476^2 .

It is a cyclic number.

It is not a de Polignac number, because 266713641322801 - 2⁷ = 266713641322673 is a prime.

It is a super-2 number, since 2×266713641322801² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (266713641322871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133356820661400 + 133356820661401.

It is an arithmetic number, because the mean of its divisors is an integer number (133356820661401).

Almost surely, 2^{266713641322801} is an apocalyptic number.

It is an amenable number.

266713641322801 is a deficient number, since it is larger than the sum of its proper divisors (1).

266713641322801 is an equidigital number, since it uses as much as digits as its factorization.

266713641322801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 266713641322801 in words is "two hundred sixty-six trillion, seven hundred thirteen billion, six hundred forty-one million, three hundred twenty-two thousand, eight hundred one".