11158816986 has 64 divisors (see below), whose sum is σ = 25740495360. Its totient is φ = 3580735680.

The previous prime is 11158816973. The next prime is 11158817023. The reversal of 11158816986 is 68961885111.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118780 + ... + 190856.

It is an arithmetic number, because the mean of its divisors is an integer number (402195240).

Almost surely, 2^11158816986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11158816986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12870247680).

11158816986 is an abundant number, since it is smaller than the sum of its proper divisors (14581678374).

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

11158816986 is a wasteful number, since it uses less digits than its factorization.

11158816986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72196 (or 72190 counting only the distinct ones).

The product of its digits is 829440, while the sum is 54.

The spelling of 11158816986 in words is "eleven billion, one hundred fifty-eight million, eight hundred sixteen thousand, nine hundred eighty-six".