111512345052 has 24 divisors (see below), whose sum is σ = 260706675600. Its totient is φ = 37097752576.

The previous prime is 111512345023. The next prime is 111512345123. The reversal of 111512345052 is 250543215111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9122277 + ... + 9134492.

It is an arithmetic number, because the mean of its divisors is an integer number (10862778150).

Almost surely, 2^111512345052 is an apocalyptic number.

111512345052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111512345052 is an abundant number, since it is smaller than the sum of its proper divisors (149194330548).

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

111512345052 is a wasteful number, since it uses less digits than its factorization.

111512345052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18257285 (or 18257283 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 111512345052 in words is "one hundred eleven billion, five hundred twelve million, three hundred forty-five thousand, fifty-two".