12543505553344 has 28 divisors (see below), whose sum is σ = 24891152979088. Its totient is φ = 6271718976000.

The previous prime is 12543505553323. The next prime is 12543505553389. The reversal of 12543505553344 is 44335550534521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14961604 + ... + 15777724.

Almost surely, 2^{12543505553344} is an apocalyptic number.

It is an amenable number.

12543505553344 is a deficient number, since it is larger than the sum of its proper divisors (12347647425744).

12543505553344 is an equidigital number, since it uses as much as digits as its factorization.

12543505553344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056284 (or 1056274 counting only the distinct ones).

The product of its (nonzero) digits is 10800000, while the sum is 49.

The spelling of 12543505553344 in words is "twelve trillion, five hundred forty-three billion, five hundred five million, five hundred fifty-three thousand, three hundred forty-four".