99638836099 has 8 divisors (see below), whose sum is σ = 110185911792. Its totient is φ = 89339927040.

The previous prime is 99638836081. The next prime is 99638836103. The reversal of 99638836099 is 99063883699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99638836099 - 2⁹ = 99638835587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99638830099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62040814 + ... + 62042419.

It is an arithmetic number, because the mean of its divisors is an integer number (13773238974).

Almost surely, 2^99638836099 is an apocalyptic number.

99638836099 is a deficient number, since it is larger than the sum of its proper divisors (10547075693).

99638836099 is a wasteful number, since it uses less digits than its factorization.

99638836099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124083317.

The product of its (nonzero) digits is 136048896, while the sum is 70.

The spelling of 99638836099 in words is "ninety-nine billion, six hundred thirty-eight million, eight hundred thirty-six thousand, ninety-nine".