264427640317 has 2 divisors, whose sum is σ = 264427640318. Its totient is φ = 264427640316.

The previous prime is 264427640287. The next prime is 264427640341. The reversal of 264427640317 is 713046724462.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250806649636 + 13620990681 = 500806^2 + 116709^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264427640317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264427640017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132213820158 + 132213820159.

It is an arithmetic number, because the mean of its divisors is an integer number (132213820159).

Almost surely, 2^264427640317 is an apocalyptic number.

It is an amenable number.

264427640317 is a deficient number, since it is larger than the sum of its proper divisors (1).

264427640317 is an equidigital number, since it uses as much as digits as its factorization.

264427640317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 46.

The spelling of 264427640317 in words is "two hundred sixty-four billion, four hundred twenty-seven million, six hundred forty thousand, three hundred seventeen".