266365013 has 2 divisors, whose sum is σ = 266365014. Its totient is φ = 266365012.

The previous prime is 266364991. The next prime is 266365031. The reversal of 266365013 is 310563662.

266365013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (266365031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251634769 + 14730244 = 15863^2 + 3838^2 .

It is a cyclic number.

It is not a de Polignac number, because 266365013 - 2¹⁴ = 266348629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266365063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133182506 + 133182507.

It is an arithmetic number, because the mean of its divisors is an integer number (133182507).

Almost surely, 2^266365013 is an apocalyptic number.

It is an amenable number.

266365013 is a deficient number, since it is larger than the sum of its proper divisors (1).

266365013 is an equidigital number, since it uses as much as digits as its factorization.

266365013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 266365013 is about 16320.6927855407. The cubic root of 266365013 is about 643.4167953201.

It can be divided in two parts, 2663 and 65013, that added together give a palindrome (67676).

The spelling of 266365013 in words is "two hundred sixty-six million, three hundred sixty-five thousand, thirteen".