111551115118 has 16 divisors (see below), whose sum is σ = 176140757520. Its totient is φ = 52837776576.

The previous prime is 111551115089. The next prime is 111551115119. The reversal of 111551115118 is 811511155111.

It is a self number, because there is not a number n which added to its sum of digits gives 111551115118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111551115119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1172380 + ... + 1263952.

It is an arithmetic number, because the mean of its divisors is an integer number (11008797345).

Almost surely, 2^111551115118 is an apocalyptic number.

111551115118 is a deficient number, since it is larger than the sum of its proper divisors (64589642402).

111551115118 is a wasteful number, since it uses less digits than its factorization.

111551115118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123651.

The product of its digits is 1000, while the sum is 31.

The spelling of 111551115118 in words is "one hundred eleven billion, five hundred fifty-one million, one hundred fifteen thousand, one hundred eighteen".