111109776988 has 12 divisors (see below), whose sum is σ = 222219554032. Its totient is φ = 47618475840.

The previous prime is 111109776959. The next prime is 111109776989. The reversal of 111109776988 is 889677901111.

111109776988 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111109776989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984103133 + ... + 1984103188.

Almost surely, 2^111109776988 is an apocalyptic number.

It is an amenable number.

111109776988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

111109776988 is a wasteful number, since it uses less digits than its factorization.

111109776988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968206332 (or 3968206330 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 58.

The spelling of 111109776988 in words is "one hundred eleven billion, one hundred nine million, seven hundred seventy-six thousand, nine hundred eighty-eight".