11977647912 has 48 divisors (see below), whose sum is σ = 32507280000. Its totient is φ = 3984202656.

The previous prime is 11977647911. The next prime is 11977647917. The reversal of 11977647912 is 21974677911.

It is a happy number.

11977647912 is a `hidden beast` number, since 1 + 1 + 97 + 76 + 479 + 12 = 666.

11977647912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11977647911) by changing a digit.

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, 139162 + ... + 208137.

It is an arithmetic number, because the mean of its divisors is an integer number (677235000).

Almost surely, 2^11977647912 is an apocalyptic number.

11977647912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11977647912 is an abundant number, since it is smaller than the sum of its proper divisors (20529632088).

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

11977647912 is a wasteful number, since it uses less digits than its factorization.

11977647912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347790 (or 347783 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 54.

The spelling of 11977647912 in words is "eleven billion, nine hundred seventy-seven million, six hundred forty-seven thousand, nine hundred twelve".