636884996323 has 2 divisors, whose sum is σ = 636884996324. Its totient is φ = 636884996322.

The previous prime is 636884996263. The next prime is 636884996329. The reversal of 636884996323 is 323699488636.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-636884996323 is a prime.

It is not a weakly prime, because it can be changed into another prime (636884996329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318442498161 + 318442498162.

It is an arithmetic number, because the mean of its divisors is an integer number (318442498162).

Almost surely, 2^636884996323 is an apocalyptic number.

636884996323 is a deficient number, since it is larger than the sum of its proper divisors (1).

636884996323 is an equidigital number, since it uses as much as digits as its factorization.

636884996323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241864704, while the sum is 67.

The spelling of 636884996323 in words is "six hundred thirty-six billion, eight hundred eighty-four million, nine hundred ninety-six thousand, three hundred twenty-three".