111724568428 has 12 divisors (see below), whose sum is σ = 213292357992. Its totient is φ = 50783894720.

The previous prime is 111724568407. The next prime is 111724568453. The reversal of 111724568428 is 824865427111.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1269597325 + ... + 1269597412.

It is an arithmetic number, because the mean of its divisors is an integer number (17774363166).

Almost surely, 2^111724568428 is an apocalyptic number.

It is an amenable number.

111724568428 is a deficient number, since it is larger than the sum of its proper divisors (101567789564).

111724568428 is a wasteful number, since it uses less digits than its factorization.

111724568428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2539194752 (or 2539194750 counting only the distinct ones).

The product of its digits is 860160, while the sum is 49.

It can be divided in two parts, 11172 and 4568428, that added together give a square (4579600 = 2140²).

The spelling of 111724568428 in words is "one hundred eleven billion, seven hundred twenty-four million, five hundred sixty-eight thousand, four hundred twenty-eight".