11886984378 has 24 divisors (see below), whose sum is σ = 25782195348. Its totient is φ = 3958164672.

The previous prime is 11886984353. The next prime is 11886984391. The reversal of 11886984378 is 87348968811.

11886984378 is a `hidden beast` number, since 1 + 188 + 6 + 9 + 84 + 378 = 666.

11886984378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10831189329 + 1055795049 = 104073^2 + 32493^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

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, 329325 + ... + 363632.

Almost surely, 2^11886984378 is an apocalyptic number.

11886984378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11886984378 is an abundant number, since it is smaller than the sum of its proper divisors (13895210970).

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

11886984378 is a wasteful number, since it uses less digits than its factorization.

11886984378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693918 (or 693915 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 63.

The spelling of 11886984378 in words is "eleven billion, eight hundred eighty-six million, nine hundred eighty-four thousand, three hundred seventy-eight".