111340243440 has 80 divisors (see below), whose sum is σ = 383505290400. Its totient is φ = 29690731008.

The previous prime is 111340243433. The next prime is 111340243477. The reversal of 111340243440 is 44342043111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 15 ways as a sum of consecutive naturals, for example, 25771045 + ... + 25775364.

It is an arithmetic number, because the mean of its divisors is an integer number (4793816130).

Almost surely, 2^111340243440 is an apocalyptic number.

111340243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111340243440 is an abundant number, since it is smaller than the sum of its proper divisors (272165046960).

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

111340243440 is a wasteful number, since it uses less digits than its factorization.

111340243440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51546431 (or 51546419 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 111340243440 its reverse (44342043111), we get a palindrome (155682286551).

The spelling of 111340243440 in words is "one hundred eleven billion, three hundred forty million, two hundred forty-three thousand, four hundred forty".