636322010813 has 2 divisors, whose sum is σ = 636322010814. Its totient is φ = 636322010812.

The previous prime is 636322010803. The next prime is 636322010839. The reversal of 636322010813 is 318010223636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365653624249 + 270668386564 = 604693^2 + 520258^2 .

It is a cyclic number.

It is not a de Polignac number, because 636322010813 - 2⁶ = 636322010749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636322010803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318161005406 + 318161005407.

It is an arithmetic number, because the mean of its divisors is an integer number (318161005407).

Almost surely, 2^636322010813 is an apocalyptic number.

It is an amenable number.

636322010813 is a deficient number, since it is larger than the sum of its proper divisors (1).

636322010813 is an equidigital number, since it uses as much as digits as its factorization.

636322010813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 636322010813 in words is "six hundred thirty-six billion, three hundred twenty-two million, ten thousand, eight hundred thirteen".