11814755891 has 4 divisors (see below), whose sum is σ = 11816489784. Its totient is φ = 11813022000.

The previous prime is 11814755831. The next prime is 11814755969. The reversal of 11814755891 is 19855741811.

11814755891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11814755891 - 2¹⁰ = 11814754867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11814755831) 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 3 ways as a sum of consecutive naturals, for example, 856685 + ... + 870366.

It is an arithmetic number, because the mean of its divisors is an integer number (2954122446).

Almost surely, 2^11814755891 is an apocalyptic number.

11814755891 is a deficient number, since it is larger than the sum of its proper divisors (1733893).

11814755891 is an equidigital number, since it uses as much as digits as its factorization.

11814755891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733892.

The product of its digits is 403200, while the sum is 50.

The spelling of 11814755891 in words is "eleven billion, eight hundred fourteen million, seven hundred fifty-five thousand, eight hundred ninety-one".