111042391593 has 20 divisors (see below), whose sum is σ = 172722342928. Its totient is φ = 63452791080.

The previous prime is 111042391591. The next prime is 111042391631. The reversal of 111042391593 is 395193240111.

It is not a de Polignac number, because 111042391593 - 2¹ = 111042391591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111042391591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7700863 + ... + 7715268.

Almost surely, 2^111042391593 is an apocalyptic number.

It is an amenable number.

111042391593 is a deficient number, since it is larger than the sum of its proper divisors (61679951335).

111042391593 is an frugal number, since it uses more digits than its factorization.

111042391593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15416162 (or 15416141 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The spelling of 111042391593 in words is "one hundred eleven billion, forty-two million, three hundred ninety-one thousand, five hundred ninety-three".