99638836158 has 16 divisors (see below), whose sum is σ = 199374763536. Its totient is φ = 33196763520.

The previous prime is 99638836133. The next prime is 99638836169. The reversal of 99638836158 is 85163883699.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4032123 + ... + 4056758.

It is an arithmetic number, because the mean of its divisors is an integer number (12460922721).

Almost surely, 2^99638836158 is an apocalyptic number.

99638836158 is an abundant number, since it is smaller than the sum of its proper divisors (99735927378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99638836158 is a wasteful number, since it uses less digits than its factorization.

99638836158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090939.

The product of its digits is 67184640, while the sum is 66.

The spelling of 99638836158 in words is "ninety-nine billion, six hundred thirty-eight million, eight hundred thirty-six thousand, one hundred fifty-eight".