11211178986 has 48 divisors (see below), whose sum is σ = 27901995264. Its totient is φ = 3186927072.

The previous prime is 11211178973. The next prime is 11211179027. The reversal of 11211178986 is 68987111211.

11211178986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11211178986² (a number of 21 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 201010 + ... + 250653.

It is an arithmetic number, because the mean of its divisors is an integer number (581291568).

Almost surely, 2^11211178986 is an apocalyptic number.

11211178986 is an abundant number, since it is smaller than the sum of its proper divisors (16690816278).

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

11211178986 is a wasteful number, since it uses less digits than its factorization.

11211178986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451875 (or 451872 counting only the distinct ones).

The product of its digits is 48384, while the sum is 45.

The spelling of 11211178986 in words is "eleven billion, two hundred eleven million, one hundred seventy-eight thousand, nine hundred eighty-six".