12321999904 has 24 divisors (see below), whose sum is σ = 24670109520. Its totient is φ = 6056575296.

The previous prime is 12321999889. The next prime is 12321999923. The reversal of 12321999904 is 40999912321.

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, 3261354 + ... + 3265129.

It is an arithmetic number, because the mean of its divisors is an integer number (1027921230).

Almost surely, 2^12321999904 is an apocalyptic number.

It is an amenable number.

12321999904 is an abundant number, since it is smaller than the sum of its proper divisors (12348109616).

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

12321999904 is an equidigital number, since it uses as much as digits as its factorization.

12321999904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6526552 (or 6526544 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

The spelling of 12321999904 in words is "twelve billion, three hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred four".