111428642865 has 8 divisors (see below), whose sum is σ = 178285828608. Its totient is φ = 59428609520.

The previous prime is 111428642849. The next prime is 111428642873. The reversal of 111428642865 is 568246824111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111428642865 - 2⁴ = 111428642849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3714288081 + ... + 3714288110.

It is an arithmetic number, because the mean of its divisors is an integer number (22285728576).

Almost surely, 2^111428642865 is an apocalyptic number.

111428642865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111428642865 is a deficient number, since it is larger than the sum of its proper divisors (66857185743).

111428642865 is an equidigital number, since it uses as much as digits as its factorization.

111428642865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7428576199.

The product of its digits is 737280, while the sum is 48.

The spelling of 111428642865 in words is "one hundred eleven billion, four hundred twenty-eight million, six hundred forty-two thousand, eight hundred sixty-five".