111656093409 has 80 divisors (see below), whose sum is σ = 193395558400. Its totient is φ = 62878454496.

The previous prime is 111656093407. The next prime is 111656093413. The reversal of 111656093409 is 904390656111.

111656093409 is a `hidden beast` number, since 1 + 1 + 1 + 6 + 5 + 609 + 34 + 0 + 9 = 666.

It is not a de Polignac number, because 111656093409 - 2¹ = 111656093407 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111656093407) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 27724854 + ... + 27728880.

It is an arithmetic number, because the mean of its divisors is an integer number (2417444480).

Almost surely, 2^111656093409 is an apocalyptic number.

It is an amenable number.

111656093409 is a deficient number, since it is larger than the sum of its proper divisors (81739464991).

111656093409 is an equidigital number, since it uses as much as digits as its factorization.

111656093409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4744 (or 4735 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The spelling of 111656093409 in words is "one hundred eleven billion, six hundred fifty-six million, ninety-three thousand, four hundred nine".