111111044013 has 6 divisors (see below), whose sum is σ = 160493730254. Its totient is φ = 74074029336.

The previous prime is 111111044003. The next prime is 111111044021. The reversal of 111111044013 is 310440111111.

111111044013 is a `hidden beast` number, since 1 + 111 + 110 + 440 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108644729769 + 2466314244 = 329613^2 + 49662^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111111044013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111111044003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6172835770 + ... + 6172835787.

Almost surely, 2^111111044013 is an apocalyptic number.

It is an amenable number.

111111044013 is a deficient number, since it is larger than the sum of its proper divisors (49382686241).

111111044013 is a wasteful number, since it uses less digits than its factorization.

111111044013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12345671563 (or 12345671560 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 111111044013 its reverse (310440111111), we get a palindrome (421551155124).

The spelling of 111111044013 in words is "one hundred eleven billion, one hundred eleven million, forty-four thousand, thirteen".