636325764769 has 2 divisors, whose sum is σ = 636325764770. Its totient is φ = 636325764768.

The previous prime is 636325764733. The next prime is 636325764787. The reversal of 636325764769 is 967467523636.

It is a happy number.

636325764769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579254943744 + 57070821025 = 761088^2 + 238895^2 .

It is a cyclic number.

It is not a de Polignac number, because 636325764769 - 2³³ = 627735830177 is a prime.

It is a super-2 number, since 2×636325764769² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 636325764769.

It is not a weakly prime, because it can be changed into another prime (636325764719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318162882384 + 318162882385.

It is an arithmetic number, because the mean of its divisors is an integer number (318162882385).

Almost surely, 2^636325764769 is an apocalyptic number.

It is an amenable number.

636325764769 is a deficient number, since it is larger than the sum of its proper divisors (1).

636325764769 is an equidigital number, since it uses as much as digits as its factorization.

636325764769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 205752960, while the sum is 64.

The spelling of 636325764769 in words is "six hundred thirty-six billion, three hundred twenty-five million, seven hundred sixty-four thousand, seven hundred sixty-nine".