111355040440 has 64 divisors (see below), whose sum is σ = 286401484800. Its totient is φ = 38170877568.

The previous prime is 111355040393. The next prime is 111355040441. The reversal of 111355040440 is 44040553111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 111355040399 and 111355040408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111355040441) 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, 1385271 + ... + 1463449.

It is an arithmetic number, because the mean of its divisors is an integer number (4475023200).

Almost surely, 2^111355040440 is an apocalyptic number.

111355040440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111355040440 is an abundant number, since it is smaller than the sum of its proper divisors (175046444360).

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

111355040440 is a wasteful number, since it uses less digits than its factorization.

111355040440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83284 (or 83280 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 111355040440 its reverse (44040553111), we get a palindrome (155395593551).

The spelling of 111355040440 in words is "one hundred eleven billion, three hundred fifty-five million, forty thousand, four hundred forty".