111417239440 has 80 divisors (see below), whose sum is σ = 279111104496. Its totient is φ = 41118105600.

The previous prime is 111417239431. The next prime is 111417239443. The reversal of 111417239440 is 44932714111.

It can be written as a sum of positive squares in 8 ways, for example, as 22972858624 + 88444380816 = 151568^2 + 297396^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 111417239440.

It is not an unprimeable number, because it can be changed into a prime (111417239443) by changing a digit.

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, 2138500 + ... + 2189980.

Almost surely, 2^111417239440 is an apocalyptic number.

111417239440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111417239440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139555552248).

111417239440 is an abundant number, since it is smaller than the sum of its proper divisors (167693865056).

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

111417239440 is a wasteful number, since it uses less digits than its factorization.

111417239440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53588 (or 53582 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 111417239440 in words is "one hundred eleven billion, four hundred seventeen million, two hundred thirty-nine thousand, four hundred forty".