12558028488 has 16 divisors (see below), whose sum is σ = 31395071280. Its totient is φ = 4186009488.

The previous prime is 12558028429. The next prime is 12558028493. The reversal of 12558028488 is 88482085521.

It is a happy number.

It is a super-2 number, since 2×12558028488² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12558028488.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261625570 + ... + 261625617.

It is an arithmetic number, because the mean of its divisors is an integer number (1962191955).

Almost surely, 2^12558028488 is an apocalyptic number.

It is an amenable number.

12558028488 is an abundant number, since it is smaller than the sum of its proper divisors (18837042792).

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

12558028488 is a wasteful number, since it uses less digits than its factorization.

12558028488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523251196 (or 523251192 counting only the distinct ones).

The product of its (nonzero) digits is 1638400, while the sum is 51.

The spelling of 12558028488 in words is "twelve billion, five hundred fifty-eight million, twenty-eight thousand, four hundred eighty-eight".