12321412544 has 56 divisors (see below), whose sum is σ = 28114800768. Its totient is φ = 5248177920.

The previous prime is 12321412531. The next prime is 12321412583. The reversal of 12321412544 is 44521412321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11342 + ... + 157389.

Almost surely, 2^12321412544 is an apocalyptic number.

12321412544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12321412544 is an abundant number, since it is smaller than the sum of its proper divisors (15793388224).

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

12321412544 is a wasteful number, since it uses less digits than its factorization.

12321412544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168913 (or 168903 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

Adding to 12321412544 its reverse (44521412321), we get a palindrome (56842824865).

The spelling of 12321412544 in words is "twelve billion, three hundred twenty-one million, four hundred twelve thousand, five hundred forty-four".