99638836157 has 8 divisors (see below), whose sum is σ = 113874868032. Its totient is φ = 85403282400.

The previous prime is 99638836133. The next prime is 99638836169. The reversal of 99638836157 is 75163883699.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99638836157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99638836093 and 99638836102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99638836457) 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, 722657 + ... + 849417.

It is an arithmetic number, because the mean of its divisors is an integer number (14234358504).

Almost surely, 2^99638836157 is an apocalyptic number.

It is an amenable number.

99638836157 is a deficient number, since it is larger than the sum of its proper divisors (14236031875).

99638836157 is a wasteful number, since it uses less digits than its factorization.

99638836157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239059.

The product of its digits is 58786560, while the sum is 65.

The spelling of 99638836157 in words is "ninety-nine billion, six hundred thirty-eight million, eight hundred thirty-six thousand, one hundred fifty-seven".