111111135579 has 12 divisors (see below), whose sum is σ = 161390478600. Its totient is φ = 73660267584.

The previous prime is 111111135539. The next prime is 111111135587. The reversal of 111111135579 is 975531111111.

It is not a de Polignac number, because 111111135579 - 2⁹ = 111111135067 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111111135529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34483534 + ... + 34486755.

It is an arithmetic number, because the mean of its divisors is an integer number (13449206550).

Almost surely, 2^111111135579 is an apocalyptic number.

111111135579 is a deficient number, since it is larger than the sum of its proper divisors (50279343021).

111111135579 is a wasteful number, since it uses less digits than its factorization.

111111135579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68970474 (or 68970471 counting only the distinct ones).

The product of its digits is 4725, while the sum is 36.

The spelling of 111111135579 in words is "one hundred eleven billion, one hundred eleven million, one hundred thirty-five thousand, five hundred seventy-nine".