111123456785 has 8 divisors (see below), whose sum is σ = 145470707136. Its totient is φ = 80817059440.

The previous prime is 111123456781. The next prime is 111123456911. The reversal of 111123456785 is 587654321111.

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

It is not a de Polignac number, because 111123456785 - 2² = 111123456781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123456781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010213189 + ... + 1010213298.

It is an arithmetic number, because the mean of its divisors is an integer number (18183838392).

Almost surely, 2^111123456785 is an apocalyptic number.

It is an amenable number.

111123456785 is a deficient number, since it is larger than the sum of its proper divisors (34347250351).

111123456785 is a wasteful number, since it uses less digits than its factorization.

111123456785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020426503.

The product of its digits is 201600, while the sum is 44.

Adding to 111123456785 its reverse (587654321111), we get a palindrome (698777777896).

The spelling of 111123456785 in words is "one hundred eleven billion, one hundred twenty-three million, four hundred fifty-six thousand, seven hundred eighty-five".