11988382056 has 64 divisors (see below), whose sum is σ = 34261265280. Its totient is φ = 3424377600.

The previous prime is 11988382039. The next prime is 11988382061. The reversal of 11988382056 is 65028388911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 951510 + ... + 964026.

It is an arithmetic number, because the mean of its divisors is an integer number (535332270).

Almost surely, 2^11988382056 is an apocalyptic number.

It is an amenable number.

11988382056 is an abundant number, since it is smaller than the sum of its proper divisors (22272883224).

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

11988382056 is a wasteful number, since it uses less digits than its factorization.

11988382056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18234 (or 18230 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 11988382056 in words is "eleven billion, nine hundred eighty-eight million, three hundred eighty-two thousand, fifty-six".