12543321404 has 12 divisors (see below), whose sum is σ = 22077696984. Its totient is φ = 6235407984.

The previous prime is 12543321397. The next prime is 12543321443. The reversal of 12543321404 is 40412334521.

It is a congruent number.

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, 9062402 + ... + 9063785.

It is an arithmetic number, because the mean of its divisors is an integer number (1839808082).

Almost surely, 2^12543321404 is an apocalyptic number.

It is an amenable number.

12543321404 is a deficient number, since it is larger than the sum of its proper divisors (9534375580).

12543321404 is a wasteful number, since it uses less digits than its factorization.

12543321404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18126364 (or 18126362 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 12543321404 its reverse (40412334521), we get a palindrome (52955655925).

The spelling of 12543321404 in words is "twelve billion, five hundred forty-three million, three hundred twenty-one thousand, four hundred four".