264239655793 has 2 divisors, whose sum is σ = 264239655794. Its totient is φ = 264239655792.

The previous prime is 264239655791. The next prime is 264239655821. The reversal of 264239655793 is 397556932462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259685025649 + 4554630144 = 509593^2 + 67488^2 .

It is a cyclic number.

It is not a de Polignac number, because 264239655793 - 2¹ = 264239655791 is a prime.

Together with 264239655791, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (264239655791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132119827896 + 132119827897.

It is an arithmetic number, because the mean of its divisors is an integer number (132119827897).

Almost surely, 2^264239655793 is an apocalyptic number.

It is an amenable number.

264239655793 is a deficient number, since it is larger than the sum of its proper divisors (1).

264239655793 is an equidigital number, since it uses as much as digits as its factorization.

264239655793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73483200, while the sum is 61.

The spelling of 264239655793 in words is "two hundred sixty-four billion, two hundred thirty-nine million, six hundred fifty-five thousand, seven hundred ninety-three".