111423520040 has 64 divisors (see below), whose sum is σ = 286652252160. Its totient is φ = 38184399360.

The previous prime is 111423520037. The next prime is 111423520073. The reversal of 111423520040 is 40025324111.

It is a junction number, because it is equal to n+sod(n) for n = 111423519988 and 111423520015.

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, 510425 + ... + 695255.

It is an arithmetic number, because the mean of its divisors is an integer number (4478941440).

Almost surely, 2^111423520040 is an apocalyptic number.

111423520040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111423520040 is an abundant number, since it is smaller than the sum of its proper divisors (175228732120).

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

111423520040 is a wasteful number, since it uses less digits than its factorization.

111423520040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187002 (or 186998 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 111423520040 its reverse (40025324111), we get a palindrome (151448844151).

The spelling of 111423520040 in words is "one hundred eleven billion, four hundred twenty-three million, five hundred twenty thousand, forty".