11686992856 has 128 divisors (see below), whose sum is σ = 29099036160. Its totient is φ = 4260096000.

The previous prime is 11686992851. The next prime is 11686992859. The reversal of 11686992856 is 65829968611.

It is a junction number, because it is equal to n+sod(n) for n = 11686992794 and 11686992803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11686992851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1808431 + ... + 1814881.

It is an arithmetic number, because the mean of its divisors is an integer number (227336220).

Almost surely, 2^11686992856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11686992856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14549518080).

11686992856 is an abundant number, since it is smaller than the sum of its proper divisors (17412043304).

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

11686992856 is a wasteful number, since it uses less digits than its factorization.

11686992856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6665 (or 6661 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 61.

The spelling of 11686992856 in words is "eleven billion, six hundred eighty-six million, nine hundred ninety-two thousand, eight hundred fifty-six".