108991338560 has 224 divisors, whose sum is σ = 296838380160. Its totient is φ = 37784420352.

The previous prime is 108991338539. The next prime is 108991338569. The reversal of 108991338560 is 65833199801.

It is a super-2 number, since 2×108991338560² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (108991338569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8925419 + ... + 8937621.

It is an arithmetic number, because the mean of its divisors is an integer number (1325171340).

Almost surely, 2^108991338560 is an apocalyptic number.

108991338560 is a gapful number since it is divisible by the number (10) 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 108991338560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148419190080).

108991338560 is an abundant number, since it is smaller than the sum of its proper divisors (187847041600).

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

108991338560 is a wasteful number, since it uses less digits than its factorization.

108991338560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12365 (or 12355 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 108991338560 in words is "one hundred eight billion, nine hundred ninety-one million, three hundred thirty-eight thousand, five hundred sixty".