108918991224 has 40 divisors (see below), whose sum is σ = 305074028160. Its totient is φ = 36306330192.

The previous prime is 108918991219. The next prime is 108918991231. The reversal of 108918991224 is 422199819801.

It is a super-4 number, since 4×108918991224⁴ (a number of 45 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 84041784 + ... + 84043079.

It is an arithmetic number, because the mean of its divisors is an integer number (7626850704).

Almost surely, 2^108918991224 is an apocalyptic number.

It is an amenable number.

108918991224 is an abundant number, since it is smaller than the sum of its proper divisors (196155036936).

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

108918991224 is a wasteful number, since it uses less digits than its factorization.

108918991224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168084881 (or 168084868 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The spelling of 108918991224 in words is "one hundred eight billion, nine hundred eighteen million, nine hundred ninety-one thousand, two hundred twenty-four".