111440243440 has 20 divisors (see below), whose sum is σ = 259098566184. Its totient is φ = 44576097344.

The previous prime is 111440243437. The next prime is 111440243443. The reversal of 111440243440 is 44342044111.

It is an interprime number because it is at equal distance from previous prime (111440243437) and next prime (111440243443).

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 111440243399 and 111440243408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111440243443) 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, 696501442 + ... + 696501601.

Almost surely, 2^111440243440 is an apocalyptic number.

111440243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111440243440 is an abundant number, since it is smaller than the sum of its proper divisors (147658322744).

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

111440243440 is a wasteful number, since it uses less digits than its factorization.

111440243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393003056 (or 1393003050 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 111440243440 its reverse (44342044111), we get a palindrome (155782287551).

The spelling of 111440243440 in words is "one hundred eleven billion, four hundred forty million, two hundred forty-three thousand, four hundred forty".