1264817038717 has 2 divisors, whose sum is σ = 1264817038718. Its totient is φ = 1264817038716.

The previous prime is 1264817038711. The next prime is 1264817038721. The reversal of 1264817038717 is 7178307184621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1260378947556 + 4438091161 = 1122666^2 + 66619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1264817038717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264817038711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632408519358 + 632408519359.

It is an arithmetic number, because the mean of its divisors is an integer number (632408519359).

Almost surely, 2^{1264817038717} is an apocalyptic number.

It is an amenable number.

1264817038717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264817038717 is an equidigital number, since it uses as much as digits as its factorization.

1264817038717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 1264817038717 in words is "one trillion, two hundred sixty-four billion, eight hundred seventeen million, thirty-eight thousand, seven hundred seventeen".