111347420865 has 16 divisors (see below), whose sum is σ = 178314543168. Its totient is φ = 59332401216.

The previous prime is 111347420809. The next prime is 111347420903. The reversal of 111347420865 is 568024743111.

It is not a de Polignac number, because 111347420865 - 2¹¹ = 111347418817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288214 + ... + 3321903.

It is an arithmetic number, because the mean of its divisors is an integer number (11144658948).

Almost surely, 2^111347420865 is an apocalyptic number.

111347420865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111347420865 is a deficient number, since it is larger than the sum of its proper divisors (66967122303).

111347420865 is a wasteful number, since it uses less digits than its factorization.

111347420865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6611248.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 111347420865 in words is "one hundred eleven billion, three hundred forty-seven million, four hundred twenty thousand, eight hundred sixty-five".