99912636396 has 144 divisors (see below), whose sum is σ = 266344784160. Its totient is φ = 31535723520.

The previous prime is 99912636391. The next prime is 99912636403. The reversal of 99912636396 is 69363621999.

99912636396 is a `hidden beast` number, since 9 + 99 + 126 + 36 + 396 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (99912636391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13790751 + ... + 13797993.

Almost surely, 2^99912636396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99912636396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133172392080).

99912636396 is an abundant number, since it is smaller than the sum of its proper divisors (166432147764).

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

99912636396 is a wasteful number, since it uses less digits than its factorization.

99912636396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536 (or 7531 counting only the distinct ones).

The product of its digits is 25509168, while the sum is 63.

The spelling of 99912636396 in words is "ninety-nine billion, nine hundred twelve million, six hundred thirty-six thousand, three hundred ninety-six".