111440424144 has 80 divisors (see below), whose sum is σ = 332406585728. Its totient is φ = 31511863296.

The previous prime is 111440424107. The next prime is 111440424157. The reversal of 111440424144 is 441424044111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1677037 + ... + 1742220.

Almost surely, 2^111440424144 is an apocalyptic number.

111440424144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

111440424144 is an abundant number, since it is smaller than the sum of its proper divisors (220966161584).

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

111440424144 is a wasteful number, since it uses less digits than its factorization.

111440424144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419372 (or 3419366 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

Adding to 111440424144 its reverse (441424044111), we get a palindrome (552864468255).

The spelling of 111440424144 in words is "one hundred eleven billion, four hundred forty million, four hundred twenty-four thousand, one hundred forty-four".