111112445578 has 16 divisors (see below), whose sum is σ = 172171618560. Its totient is φ = 53724542400.

The previous prime is 111112445573. The next prime is 111112445581. The reversal of 111112445578 is 875544211111.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 111112445578.

It is not an unprimeable number, because it can be changed into a prime (111112445573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574008 + ... + 742771.

It is an arithmetic number, because the mean of its divisors is an integer number (10760726160).

Almost surely, 2^111112445578 is an apocalyptic number.

111112445578 is a deficient number, since it is larger than the sum of its proper divisors (61059172982).

111112445578 is a wasteful number, since it uses less digits than its factorization.

111112445578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318173.

The product of its digits is 44800, while the sum is 40.

Adding to 111112445578 its reverse (875544211111), we get a palindrome (986656656689).

The spelling of 111112445578 in words is "one hundred eleven billion, one hundred twelve million, four hundred forty-five thousand, five hundred seventy-eight".