266266410749 has 2 divisors, whose sum is σ = 266266410750. Its totient is φ = 266266410748.

The previous prime is 266266410719. The next prime is 266266410791. The reversal of 266266410749 is 947014662662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246919548100 + 19346862649 = 496910^2 + 139093^2 .

It is a cyclic number.

It is not a de Polignac number, because 266266410749 - 2²⁸ = 265997975293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266266410749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266266410719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133133205374 + 133133205375.

It is an arithmetic number, because the mean of its divisors is an integer number (133133205375).

Almost surely, 2^266266410749 is an apocalyptic number.

It is an amenable number.

266266410749 is a deficient number, since it is larger than the sum of its proper divisors (1).

266266410749 is an equidigital number, since it uses as much as digits as its factorization.

266266410749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 266266410749 in words is "two hundred sixty-six billion, two hundred sixty-six million, four hundred ten thousand, seven hundred forty-nine".