108635438999 has 2 divisors, whose sum is σ = 108635439000. Its totient is φ = 108635438998.

The previous prime is 108635438987. The next prime is 108635439001. The reversal of 108635438999 is 999834536801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108635438999 - 2¹² = 108635434903 is a prime.

Together with 108635439001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108635438099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54317719499 + 54317719500.

It is an arithmetic number, because the mean of its divisors is an integer number (54317719500).

Almost surely, 2^108635438999 is an apocalyptic number.

108635438999 is a deficient number, since it is larger than the sum of its proper divisors (1).

108635438999 is an equidigital number, since it uses as much as digits as its factorization.

108635438999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50388480, while the sum is 65.

The spelling of 108635438999 in words is "one hundred eight billion, six hundred thirty-five million, four hundred thirty-eight thousand, nine hundred ninety-nine".