11500321868 has 12 divisors (see below), whose sum is σ = 23000643792. Its totient is φ = 4928709360.

The previous prime is 11500321817. The next prime is 11500321871. The reversal of 11500321868 is 86812300511.

11500321868 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205362863 + ... + 205362918.

It is an arithmetic number, because the mean of its divisors is an integer number (1916720316).

Almost surely, 2^11500321868 is an apocalyptic number.

It is an amenable number.

11500321868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11500321868 is a wasteful number, since it uses less digits than its factorization.

11500321868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410725792 (or 410725790 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 11500321868 in words is "eleven billion, five hundred million, three hundred twenty-one thousand, eight hundred sixty-eight".