5252638338709 has 2 divisors, whose sum is σ = 5252638338710. Its totient is φ = 5252638338708.

The previous prime is 5252638338683. The next prime is 5252638338737. The reversal of 5252638338709 is 9078338362525.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5229934479025 + 22703859684 = 2286905^2 + 150678^2 .

It is a cyclic number.

It is not a de Polignac number, because 5252638338709 - 2²⁹ = 5252101467797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5252638338749) 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, 2626319169354 + 2626319169355.

It is an arithmetic number, because the mean of its divisors is an integer number (2626319169355).

Almost surely, 2^{5252638338709} is an apocalyptic number.

It is an amenable number.

5252638338709 is a deficient number, since it is larger than the sum of its proper divisors (1).

5252638338709 is an equidigital number, since it uses as much as digits as its factorization.

5252638338709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65318400, while the sum is 61.

The spelling of 5252638338709 in words is "five trillion, two hundred fifty-two billion, six hundred thirty-eight million, three hundred thirty-eight thousand, seven hundred nine".