12545278884 has 144 divisors (see below), whose sum is σ = 35195422080. Its totient is φ = 3749898240.

The previous prime is 12545278847. The next prime is 12545278891. The reversal of 12545278884 is 48887254521.

12545278884 is a `hidden beast` number, since 12 + 545 + 2 + 7 + 8 + 8 + 84 = 666.

12545278884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12545278884³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12545278884.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1521894 + ... + 1530114.

Almost surely, 2^12545278884 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12545278884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17597711040).

12545278884 is an abundant number, since it is smaller than the sum of its proper divisors (22650143196).

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

12545278884 is a wasteful number, since it uses less digits than its factorization.

12545278884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8370 (or 8365 counting only the distinct ones).

The product of its digits is 5734400, while the sum is 54.

The spelling of 12545278884 in words is "twelve billion, five hundred forty-five million, two hundred seventy-eight thousand, eight hundred eighty-four".