111117861869 has 16 divisors (see below), whose sum is σ = 131892019200. Its totient is φ = 91637443824.

The previous prime is 111117861857. The next prime is 111117861893. The reversal of 111117861869 is 968168711111.

It is a cyclic number.

It is not a de Polignac number, because 111117861869 - 2⁴ = 111117861853 is a prime.

It is a super-2 number, since 2×111117861869² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111117861839) 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, 2842829 + ... + 2881650.

It is an arithmetic number, because the mean of its divisors is an integer number (8243251200).

Almost surely, 2^111117861869 is an apocalyptic number.

It is an amenable number.

111117861869 is a deficient number, since it is larger than the sum of its proper divisors (20774157331).

111117861869 is an equidigital number, since it uses as much as digits as its factorization.

111117861869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5724592.

The product of its digits is 145152, while the sum is 50.

The spelling of 111117861869 in words is "one hundred eleven billion, one hundred seventeen million, eight hundred sixty-one thousand, eight hundred sixty-nine".