108591998832 has 120 divisors (see below), whose sum is σ = 305553278160. Its totient is φ = 36001704960.

The previous prime is 108591998813. The next prime is 108591998833. The reversal of 108591998832 is 238899195801.

108591998832 is a `hidden beast` number, since 1 + 0 + 8 + 591 + 9 + 9 + 8 + 8 + 32 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 108591998832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108591998833) 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, 26764548 + ... + 26768604.

It is an arithmetic number, because the mean of its divisors is an integer number (2546277318).

Almost surely, 2^108591998832 is an apocalyptic number.

108591998832 is a gapful number since it is divisible by the number (12) 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 108591998832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152776639080).

108591998832 is an abundant number, since it is smaller than the sum of its proper divisors (196961279328).

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

108591998832 is a wasteful number, since it uses less digits than its factorization.

108591998832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031 (or 5022 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 63.

The spelling of 108591998832 in words is "one hundred eight billion, five hundred ninety-one million, nine hundred ninety-eight thousand, eight hundred thirty-two".