11918856366 has 24 divisors (see below), whose sum is σ = 27343259424. Its totient is φ = 3739248960.

The previous prime is 11918856343. The next prime is 11918856437. The reversal of 11918856366 is 66365881911.

11918856366 is a `hidden beast` number, since 1 + 1 + 9 + 18 + 8 + 563 + 66 = 666.

11918856366 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, 19474950 + ... + 19475561.

It is an arithmetic number, because the mean of its divisors is an integer number (1139302476).

Almost surely, 2^11918856366 is an apocalyptic number.

11918856366 is an abundant number, since it is smaller than the sum of its proper divisors (15424403058).

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

11918856366 is a wasteful number, since it uses less digits than its factorization.

11918856366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38950536 (or 38950533 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The spelling of 11918856366 in words is "eleven billion, nine hundred eighteen million, eight hundred fifty-six thousand, three hundred sixty-six".