111423111444 has 36 divisors (see below), whose sum is σ = 283280932116. Its totient is φ = 36926347008.

The previous prime is 111423111419. The next prime is 111423111451. The reversal of 111423111444 is 444111324111.

It can be written as a sum of positive squares in 2 ways, for example, as 105618500100 + 5804611344 = 324990^2 + 76188^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 8939109 + ... + 8951564.

It is an arithmetic number, because the mean of its divisors is an integer number (7868914781).

Almost surely, 2^111423111444 is an apocalyptic number.

It is an amenable number.

111423111444 is an abundant number, since it is smaller than the sum of its proper divisors (171857820672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111423111444 is a wasteful number, since it uses less digits than its factorization.

111423111444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17890856 (or 17890851 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

Adding to 111423111444 its reverse (444111324111), we get a palindrome (555534435555).

The spelling of 111423111444 in words is "one hundred eleven billion, four hundred twenty-three million, one hundred eleven thousand, four hundred forty-four".