111541116636 has 48 divisors (see below), whose sum is σ = 289208482080. Its totient is φ = 37176796800.

The previous prime is 111541116619. The next prime is 111541116637. The reversal of 111541116636 is 636611145111.

111541116636 is a `hidden beast` number, since 1 + 1 + 1 + 5 + 4 + 1 + 1 + 16 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 111541116636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111541116637) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1230750 + ... + 1318266.

It is an arithmetic number, because the mean of its divisors is an integer number (6025176710).

Almost surely, 2^111541116636 is an apocalyptic number.

It is an amenable number.

111541116636 is an abundant number, since it is smaller than the sum of its proper divisors (177667365444).

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

111541116636 is a wasteful number, since it uses less digits than its factorization.

111541116636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99331 (or 99323 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The spelling of 111541116636 in words is "one hundred eleven billion, five hundred forty-one million, one hundred sixteen thousand, six hundred thirty-six".