111784012289 has 4 divisors (see below), whose sum is σ = 111862239060. Its totient is φ = 111705785520.

The previous prime is 111784012279. The next prime is 111784012297. The reversal of 111784012289 is 982210487111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27272871025 + 84511141264 = 165145^2 + 290708^2 .

It is a cyclic number.

It is not a de Polignac number, because 111784012289 - 2¹⁶ = 111783946753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111784012279) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39111242 + ... + 39114099.

It is an arithmetic number, because the mean of its divisors is an integer number (27965559765).

Almost surely, 2^111784012289 is an apocalyptic number.

It is an amenable number.

111784012289 is a deficient number, since it is larger than the sum of its proper divisors (78226771).

111784012289 is an equidigital number, since it uses as much as digits as its factorization.

111784012289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78226770.

The product of its (nonzero) digits is 64512, while the sum is 44.

The spelling of 111784012289 in words is "one hundred eleven billion, seven hundred eighty-four million, twelve thousand, two hundred eighty-nine".