12321401664 has 112 divisors (see below), whose sum is σ = 38299826880. Its totient is φ = 3446538240.

The previous prime is 12321401663. The next prime is 12321401671. The reversal of 12321401664 is 46610412321.

12321401664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321401663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196929 + ... + 251840.

It is an arithmetic number, because the mean of its divisors is an integer number (341962740).

Almost surely, 2^12321401664 is an apocalyptic number.

It is an amenable number.

12321401664 is an abundant number, since it is smaller than the sum of its proper divisors (25978425216).

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

12321401664 is a wasteful number, since it uses less digits than its factorization.

12321401664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448808 (or 448798 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 12321401664 its reverse (46610412321), we get a palindrome (58931813985).

The spelling of 12321401664 in words is "twelve billion, three hundred twenty-one million, four hundred one thousand, six hundred sixty-four".