99638836156 has 24 divisors (see below), whose sum is σ = 180201589344. Its totient is φ = 48174174720.

The previous prime is 99638836133. The next prime is 99638836169. The reversal of 99638836156 is 65163883699.

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, 2669760 + ... + 2706823.

It is an arithmetic number, because the mean of its divisors is an integer number (7508399556).

Almost surely, 2^99638836156 is an apocalyptic number.

It is an amenable number.

99638836156 is a deficient number, since it is larger than the sum of its proper divisors (80562753188).

99638836156 is a wasteful number, since it uses less digits than its factorization.

99638836156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376741 (or 5376739 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 64.

The spelling of 99638836156 in words is "ninety-nine billion, six hundred thirty-eight million, eight hundred thirty-six thousand, one hundred fifty-six".