111512345240 has 64 divisors (see below), whose sum is σ = 265713255360. Its totient is φ = 41972981760.

The previous prime is 111512345233. The next prime is 111512345281. The reversal of 111512345240 is 42543215111.

It is a happy number.

It is a congruent number.

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, 4394429 + ... + 4419731.

It is an arithmetic number, because the mean of its divisors is an integer number (4151769615).

Almost surely, 2^111512345240 is an apocalyptic number.

111512345240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111512345240 is an abundant number, since it is smaller than the sum of its proper divisors (154200910120).

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

111512345240 is a wasteful number, since it uses less digits than its factorization.

111512345240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31812 (or 31808 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The spelling of 111512345240 in words is "one hundred eleven billion, five hundred twelve million, three hundred forty-five thousand, two hundred forty".