111550020144 has 20 divisors (see below), whose sum is σ = 288170885496. Its totient is φ = 37183340032.

The previous prime is 111550020139. The next prime is 111550020187. The reversal of 111550020144 is 441020055111.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 3 ways as a sum of consecutive naturals, for example, 1161979329 + ... + 1161979424.

Almost surely, 2^111550020144 is an apocalyptic number.

It is an amenable number.

111550020144 is an abundant number, since it is smaller than the sum of its proper divisors (176620865352).

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

111550020144 is a wasteful number, since it uses less digits than its factorization.

111550020144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323958764 (or 2323958758 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 111550020144 its reverse (441020055111), we get a palindrome (552570075255).

The spelling of 111550020144 in words is "one hundred eleven billion, five hundred fifty million, twenty thousand, one hundred forty-four".