11631636108 has 72 divisors (see below), whose sum is σ = 30412928000. Its totient is φ = 3744442080.

The previous prime is 11631636101. The next prime is 11631636119. The reversal of 11631636108 is 80163613611.

11631636108 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 1 + 636 + 10 + 8 = 666.

11631636108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11631636101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 546441 + ... + 567327.

Almost surely, 2^11631636108 is an apocalyptic number.

11631636108 is a gapful number since it is divisible by the number (18) 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 11631636108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15206464000).

11631636108 is an abundant number, since it is smaller than the sum of its proper divisors (18781291892).

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

11631636108 is a wasteful number, since it uses less digits than its factorization.

11631636108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21427 (or 21422 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 11631636108 in words is "eleven billion, six hundred thirty-one million, six hundred thirty-six thousand, one hundred eight".