111559831144 has 16 divisors (see below), whose sum is σ = 211331124900. Its totient is φ = 55204864512.

The previous prime is 111559831091. The next prime is 111559831237. The reversal of 111559831144 is 441138955111.

It can be written as a sum of positive squares in 2 ways, for example, as 106838767044 + 4721064100 = 326862^2 + 68710^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 111559831144.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71880559 + ... + 71882110.

Almost surely, 2^111559831144 is an apocalyptic number.

It is an amenable number.

111559831144 is a deficient number, since it is larger than the sum of its proper divisors (99771293756).

111559831144 is a wasteful number, since it uses less digits than its factorization.

111559831144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143762772 (or 143762768 counting only the distinct ones).

The product of its digits is 86400, while the sum is 43.

The spelling of 111559831144 in words is "one hundred eleven billion, five hundred fifty-nine million, eight hundred thirty-one thousand, one hundred forty-four".