12543549792 has 48 divisors (see below), whose sum is σ = 33024609072. Its totient is φ = 4168765440.

The previous prime is 12543549779. The next prime is 12543549793. The reversal of 12543549792 is 29794534521.

12543549792 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543549793) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 161509 + ... + 226212.

It is an arithmetic number, because the mean of its divisors is an integer number (688012689).

Almost surely, 2^12543549792 is an apocalyptic number.

12543549792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12543549792 is an abundant number, since it is smaller than the sum of its proper divisors (20481059280).

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

12543549792 is a wasteful number, since it uses less digits than its factorization.

12543549792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388071 (or 388063 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 51.

The spelling of 12543549792 in words is "twelve billion, five hundred forty-three million, five hundred forty-nine thousand, seven hundred ninety-two".