111868307828 has 48 divisors (see below), whose sum is σ = 201582186624. Its totient is φ = 54305648640.

The previous prime is 111868307827. The next prime is 111868307851. The reversal of 111868307828 is 828703868111.

It is a self number, because there is not a number n which added to its sum of digits gives 111868307828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111868307827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4263068 + ... + 4289228.

It is an arithmetic number, because the mean of its divisors is an integer number (4199628888).

Almost surely, 2^111868307828 is an apocalyptic number.

It is an amenable number.

111868307828 is a deficient number, since it is larger than the sum of its proper divisors (89713878796).

111868307828 is a wasteful number, since it uses less digits than its factorization.

111868307828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26472 (or 26470 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 111868307828 in words is "one hundred eleven billion, eight hundred sixty-eight million, three hundred seven thousand, eight hundred twenty-eight".