99636988895136 has 1440 divisors, whose sum is σ = 375477960122496. Its totient is φ = 25364366438400.

The previous prime is 99636988895123. The next prime is 99636988895183. The reversal of 99636988895136 is 63159888963699.

99636988895136 is a `hidden beast` number, since 9 + 9 + 6 + 3 + 6 + 9 + 8 + 8 + 89 + 513 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 42452912715 + ... + 42452915061.

Almost surely, 2^{99636988895136} is an apocalyptic number.

99636988895136 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99636988895136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187738980061248).

99636988895136 is an abundant number, since it is smaller than the sum of its proper divisors (275840971227360).

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

99636988895136 is a wasteful number, since it uses less digits than its factorization.

99636988895136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2748 counting only the distinct ones).

The product of its digits is 32651735040, while the sum is 90.

The spelling of 99636988895136 in words is "ninety-nine trillion, six hundred thirty-six billion, nine hundred eighty-eight million, eight hundred ninety-five thousand, one hundred thirty-six".