11517051686 has 48 divisors (see below), whose sum is σ = 20457211488. Its totient is φ = 4762368000.

The previous prime is 11517051641. The next prime is 11517051713. The reversal of 11517051686 is 68615071511.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2396486 + ... + 2401286.

It is an arithmetic number, because the mean of its divisors is an integer number (426191906).

Almost surely, 2^11517051686 is an apocalyptic number.

11517051686 is a deficient number, since it is larger than the sum of its proper divisors (8940159802).

11517051686 is an equidigital number, since it uses as much as digits as its factorization.

11517051686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4977 (or 4924 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 41.

The spelling of 11517051686 in words is "eleven billion, five hundred seventeen million, fifty-one thousand, six hundred eighty-six".