111550134542 has 48 divisors (see below), whose sum is σ = 212473428912. Its totient is φ = 43433470080.

The previous prime is 111550134517. The next prime is 111550134571. The reversal of 111550134542 is 245431055111.

It is a junction number, because it is equal to n+sod(n) for n = 111550134499 and 111550134508.

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 23 ways as a sum of consecutive naturals, for example, 1706738 + ... + 1770890.

It is an arithmetic number, because the mean of its divisors is an integer number (4426529769).

Almost surely, 2^111550134542 is an apocalyptic number.

111550134542 is a deficient number, since it is larger than the sum of its proper divisors (100923294370).

111550134542 is a wasteful number, since it uses less digits than its factorization.

111550134542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65793 (or 65786 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

Adding to 111550134542 its reverse (245431055111), we get a palindrome (356981189653).

The spelling of 111550134542 in words is "one hundred eleven billion, five hundred fifty million, one hundred thirty-four thousand, five hundred forty-two".