264538068233 has 2 divisors, whose sum is σ = 264538068234. Its totient is φ = 264538068232.

The previous prime is 264538068209. The next prime is 264538068251. The reversal of 264538068233 is 332860835462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248773507984 + 15764560249 = 498772^2 + 125557^2 .

It is a cyclic number.

It is not a de Polignac number, because 264538068233 - 2²⁸ = 264269632777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (264538068133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132269034116 + 132269034117.

It is an arithmetic number, because the mean of its divisors is an integer number (132269034117).

Almost surely, 2^264538068233 is an apocalyptic number.

It is an amenable number.

264538068233 is a deficient number, since it is larger than the sum of its proper divisors (1).

264538068233 is an equidigital number, since it uses as much as digits as its factorization.

264538068233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4976640, while the sum is 50.

The spelling of 264538068233 in words is "two hundred sixty-four billion, five hundred thirty-eight million, sixty-eight thousand, two hundred thirty-three".