264440636541017 has 2 divisors, whose sum is σ = 264440636541018. Its totient is φ = 264440636541016.

The previous prime is 264440636540987. The next prime is 264440636541113. The reversal of 264440636541017 is 710145636044462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 260285659823641 + 4154976717376 = 16133371^2 + 2038376^2 .

It is a cyclic number.

It is not a de Polignac number, because 264440636541017 - 2²⁶ = 264440569432153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264440636541017.

It is not a weakly prime, because it can be changed into another prime (264440636541617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132220318270508 + 132220318270509.

It is an arithmetic number, because the mean of its divisors is an integer number (132220318270509).

Almost surely, 2^{264440636541017} is an apocalyptic number.

It is an amenable number.

264440636541017 is a deficient number, since it is larger than the sum of its proper divisors (1).

264440636541017 is an equidigital number, since it uses as much as digits as its factorization.

264440636541017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 264440636541017 in words is "two hundred sixty-four trillion, four hundred forty billion, six hundred thirty-six million, five hundred forty-one thousand, seventeen".