12566112988 has 48 divisors (see below), whose sum is σ = 25918663680. Its totient is φ = 5255467200.

The previous prime is 12566112967. The next prime is 12566113031. The reversal of 12566112988 is 88921166521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142573 + ... + 213211.

It is an arithmetic number, because the mean of its divisors is an integer number (539972160).

Almost surely, 2^12566112988 is an apocalyptic number.

It is an amenable number.

12566112988 is an abundant number, since it is smaller than the sum of its proper divisors (13352550692).

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

12566112988 is a wasteful number, since it uses less digits than its factorization.

12566112988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70978 (or 70976 counting only the distinct ones).

The product of its digits is 414720, while the sum is 49.

The spelling of 12566112988 in words is "twelve billion, five hundred sixty-six million, one hundred twelve thousand, nine hundred eighty-eight".