111559831142 has 4 divisors (see below), whose sum is σ = 167339746716. Its totient is φ = 55779915570.

The previous prime is 111559831091. The next prime is 111559831237. The reversal of 111559831142 is 241138955111.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111559831142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27889957784 + ... + 27889957787.

It is an arithmetic number, because the mean of its divisors is an integer number (41834936679).

Almost surely, 2^111559831142 is an apocalyptic number.

111559831142 is a deficient number, since it is larger than the sum of its proper divisors (55779915574).

111559831142 is an equidigital number, since it uses as much as digits as its factorization.

111559831142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55779915573.

The product of its digits is 43200, while the sum is 41.

The spelling of 111559831142 in words is "one hundred eleven billion, five hundred fifty-nine million, eight hundred thirty-one thousand, one hundred forty-two".