11891035868 has 6 divisors (see below), whose sum is σ = 20809312776. Its totient is φ = 5945517932.

The previous prime is 11891035847. The next prime is 11891035873. The reversal of 11891035868 is 86853019811.

11891035868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1486379480 + ... + 1486379487.

It is an arithmetic number, because the mean of its divisors is an integer number (3468218796).

Almost surely, 2^11891035868 is an apocalyptic number.

It is an amenable number.

11891035868 is a deficient number, since it is larger than the sum of its proper divisors (8918276908).

11891035868 is a wasteful number, since it uses less digits than its factorization.

11891035868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972758971 (or 2972758969 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 11891035868 in words is "eleven billion, eight hundred ninety-one million, thirty-five thousand, eight hundred sixty-eight".