12543128140 has 36 divisors (see below), whose sum is σ = 27280221696. Its totient is φ = 4844236096.

The previous prime is 12543128119. The next prime is 12543128153. The reversal of 12543128140 is 4182134521.

12543128140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 356044 + ... + 389683.

It is an arithmetic number, because the mean of its divisors is an integer number (757783936).

Almost surely, 2^12543128140 is an apocalyptic number.

12543128140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12543128140 is an abundant number, since it is smaller than the sum of its proper divisors (14737093556).

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

12543128140 is a wasteful number, since it uses less digits than its factorization.

12543128140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745794 (or 745763 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 12543128140 in words is "twelve billion, five hundred forty-three million, one hundred twenty-eight thousand, one hundred forty".