111616550012 has 12 divisors (see below), whose sum is σ = 213086141016. Its totient is φ = 50734795440.

The previous prime is 111616549969. The next prime is 111616550027. The reversal of 111616550012 is 210055616111.

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 3 ways as a sum of consecutive naturals, for example, 1268369843 + ... + 1268369930.

It is an arithmetic number, because the mean of its divisors is an integer number (17757178418).

Almost surely, 2^111616550012 is an apocalyptic number.

It is an amenable number.

111616550012 is a deficient number, since it is larger than the sum of its proper divisors (101469591004).

111616550012 is a wasteful number, since it uses less digits than its factorization.

111616550012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536739788 (or 2536739786 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 29.

The spelling of 111616550012 in words is "one hundred eleven billion, six hundred sixteen million, five hundred fifty thousand, twelve".