636117538103 has 2 divisors, whose sum is σ = 636117538104. Its totient is φ = 636117538102.

The previous prime is 636117538061. The next prime is 636117538129. The reversal of 636117538103 is 301835711636.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 636117538103 - 2²² = 636113343799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636117538163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318058769051 + 318058769052.

It is an arithmetic number, because the mean of its divisors is an integer number (318058769052).

Almost surely, 2^636117538103 is an apocalyptic number.

636117538103 is a deficient number, since it is larger than the sum of its proper divisors (1).

636117538103 is an equidigital number, since it uses as much as digits as its factorization.

636117538103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 44.

The spelling of 636117538103 in words is "six hundred thirty-six billion, one hundred seventeen million, five hundred thirty-eight thousand, one hundred three".