266765074241 has 2 divisors, whose sum is σ = 266765074242. Its totient is φ = 266765074240.

The previous prime is 266765074141. The next prime is 266765074319. The reversal of 266765074241 is 142470567662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194670676225 + 72094398016 = 441215^2 + 268504^2 .

It is a cyclic number.

It is not a de Polignac number, because 266765074241 - 2²² = 266760879937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 266765074241.

It is not a weakly prime, because it can be changed into another prime (266765074141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133382537120 + 133382537121.

It is an arithmetic number, because the mean of its divisors is an integer number (133382537121).

Almost surely, 2^266765074241 is an apocalyptic number.

It is an amenable number.

266765074241 is a deficient number, since it is larger than the sum of its proper divisors (1).

266765074241 is an equidigital number, since it uses as much as digits as its factorization.

266765074241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 266765074241 in words is "two hundred sixty-six billion, seven hundred sixty-five million, seventy-four thousand, two hundred forty-one".