12321839052 has 36 divisors (see below), whose sum is σ = 31151332576. Its totient is φ = 4106691360.

The previous prime is 12321839051. The next prime is 12321839053. The reversal of 12321839052 is 25093812321.

12321839052 is a `hidden beast` number, since 1 + 2 + 3 + 218 + 390 + 52 = 666.

It is an interprime number because it is at equal distance from previous prime (12321839051) and next prime (12321839053).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12321838998 and 12321839016.

It is not an unprimeable number, because it can be changed into a prime (12321839051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283218 + ... + 323814.

Almost surely, 2^12321839052 is an apocalyptic number.

12321839052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12321839052 is an abundant number, since it is smaller than the sum of its proper divisors (18829493524).

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

12321839052 is a wasteful number, since it uses less digits than its factorization.

12321839052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49038 (or 49033 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 12321839052 in words is "twelve billion, three hundred twenty-one million, eight hundred thirty-nine thousand, fifty-two".