11691115879 has 8 divisors (see below), whose sum is σ = 11784681792. Its totient is φ = 11597921280.

The previous prime is 11691115871. The next prime is 11691115903. The reversal of 11691115879 is 97851119611.

11691115879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11691115879 - 2³ = 11691115871 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 (11691115871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29434 + ... + 155719.

It is an arithmetic number, because the mean of its divisors is an integer number (1473085224).

Almost surely, 2^11691115879 is an apocalyptic number.

11691115879 is a deficient number, since it is larger than the sum of its proper divisors (93565913).

11691115879 is a wasteful number, since it uses less digits than its factorization.

11691115879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185657.

The product of its digits is 136080, while the sum is 49.

The spelling of 11691115879 in words is "eleven billion, six hundred ninety-one million, one hundred fifteen thousand, eight hundred seventy-nine".