11987165286 has 24 divisors (see below), whose sum is σ = 25974603720. Its totient is φ = 3995350656.

The previous prime is 11987165263. The next prime is 11987165293. The reversal of 11987165286 is 68256178911.

It is a happy number.

11987165286 is a `hidden beast` number, since 11 + 98 + 7 + 16 + 528 + 6 = 666.

11987165286 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 in 11 ways as a sum of consecutive naturals, for example, 225910 + ... + 273878.

It is an arithmetic number, because the mean of its divisors is an integer number (1082275155).

Almost surely, 2^11987165286 is an apocalyptic number.

11987165286 is an abundant number, since it is smaller than the sum of its proper divisors (13987438434).

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

11987165286 is a wasteful number, since it uses less digits than its factorization.

11987165286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61860 (or 61857 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 54.

The spelling of 11987165286 in words is "eleven billion, nine hundred eighty-seven million, one hundred sixty-five thousand, two hundred eighty-six".