12320024864 has 24 divisors (see below), whose sum is σ = 27720056448. Its totient is φ = 5280010560.

The previous prime is 12320024861. The next prime is 12320024887. The reversal of 12320024864 is 46842002321.

It is a Harshad number since it is a multiple of its sum of digits (32).

12320024864 is a modest number, since divided by 24864 gives 12320 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 12320024864.

It is not an unprimeable number, because it can be changed into a prime (12320024861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27499832 + ... + 27500279.

It is an arithmetic number, because the mean of its divisors is an integer number (1155002352).

Almost surely, 2^12320024864 is an apocalyptic number.

12320024864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12320024864 is an abundant number, since it is smaller than the sum of its proper divisors (15400031584).

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

12320024864 is an equidigital number, since it uses as much as digits as its factorization.

12320024864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55000128 (or 55000120 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 12320024864 in words is "twelve billion, three hundred twenty million, twenty-four thousand, eight hundred sixty-four".