12081866376448 has 72 divisors (see below), whose sum is σ = 27856535938560. Its totient is φ = 5168712867840.

The previous prime is 12081866376443. The next prime is 12081866376487. The reversal of 12081866376448 is 84467366818021.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a self number, because there is not a number n which added to its sum of digits gives 12081866376448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12081866376443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126141408 + ... + 126237151.

It is an arithmetic number, because the mean of its divisors is an integer number (386896332480).

Almost surely, 2^{12081866376448} is an apocalyptic number.

It is an amenable number.

12081866376448 is an abundant number, since it is smaller than the sum of its proper divisors (15774669562112).

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

12081866376448 is a wasteful number, since it uses less digits than its factorization.

12081866376448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252378603 (or 252378589 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 12081866376448 in words is "twelve trillion, eighty-one billion, eight hundred sixty-six million, three hundred seventy-six thousand, four hundred forty-eight".