11956366816 has 24 divisors (see below), whose sum is σ = 24777998280. Its totient is φ = 5663541888.

The previous prime is 11956366811. The next prime is 11956366817. The reversal of 11956366816 is 61866365911.

It is a happy number.

11956366816 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 not an unprimeable number, because it can be changed into a prime (11956366811) 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 3 ways as a sum of consecutive naturals, for example, 9831931 + ... + 9833146.

It is an arithmetic number, because the mean of its divisors is an integer number (1032416595).

Almost surely, 2^11956366816 is an apocalyptic number.

11956366816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11956366816 is an abundant number, since it is smaller than the sum of its proper divisors (12821631464).

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

11956366816 is a wasteful number, since it uses less digits than its factorization.

11956366816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19665106 (or 19665098 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The spelling of 11956366816 in words is "eleven billion, nine hundred fifty-six million, three hundred sixty-six thousand, eight hundred sixteen".