12585555168 has 48 divisors (see below), whose sum is σ = 33357856896. Its totient is φ = 4154451840.

The previous prime is 12585555167. The next prime is 12585555223. The reversal of 12585555168 is 86155558521.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 12585555168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12585555161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626518 + ... + 646293.

It is an arithmetic number, because the mean of its divisors is an integer number (694955352).

Almost surely, 2^12585555168 is an apocalyptic number.

It is an amenable number.

12585555168 is an abundant number, since it is smaller than the sum of its proper divisors (20772301728).

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

12585555168 is a wasteful number, since it uses less digits than its factorization.

12585555168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272927 (or 1272919 counting only the distinct ones).

The product of its digits is 2400000, while the sum is 51.

The spelling of 12585555168 in words is "twelve billion, five hundred eighty-five million, five hundred fifty-five thousand, one hundred sixty-eight".