12321334564 has 24 divisors (see below), whose sum is σ = 26882912448. Its totient is φ = 4800519840.

The previous prime is 12321334547. The next prime is 12321334601. The reversal of 12321334564 is 46543312321.

It is a happy 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, 20001859 + ... + 20002474.

It is an arithmetic number, because the mean of its divisors is an integer number (1120121352).

Almost surely, 2^12321334564 is an apocalyptic number.

12321334564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12321334564 is an abundant number, since it is smaller than the sum of its proper divisors (14561577884).

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

12321334564 is a wasteful number, since it uses less digits than its factorization.

12321334564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40004355 (or 40004353 counting only the distinct ones).

The product of its digits is 51840, while the sum is 34.

Adding to 12321334564 its reverse (46543312321), we get a palindrome (58864646885).

The spelling of 12321334564 in words is "twelve billion, three hundred twenty-one million, three hundred thirty-four thousand, five hundred sixty-four".