11128078879 has 4 divisors (see below), whose sum is σ = 11128483600. Its totient is φ = 11127674160.

The previous prime is 11128078867. The next prime is 11128078883. The reversal of 11128078879 is 97887082111.

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

It is a cyclic number.

It is not a de Polignac number, because 11128078879 - 2⁵ = 11128078847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11128078849) 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, 157854 + ... + 217195.

It is an arithmetic number, because the mean of its divisors is an integer number (2782120900).

Almost surely, 2^11128078879 is an apocalyptic number.

11128078879 is a deficient number, since it is larger than the sum of its proper divisors (404721).

11128078879 is an equidigital number, since it uses as much as digits as its factorization.

11128078879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404720.

The product of its (nonzero) digits is 451584, while the sum is 52.

The spelling of 11128078879 in words is "eleven billion, one hundred twenty-eight million, seventy-eight thousand, eight hundred seventy-nine".