12320055672 has 64 divisors (see below), whose sum is σ = 30943090560. Its totient is φ = 4087670400.

The previous prime is 12320055661. The next prime is 12320055679. The reversal of 12320055672 is 27655002321.

12320055672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12320055672² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320055679) 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, 8920422 + ... + 8921802.

It is an arithmetic number, because the mean of its divisors is an integer number (483485790).

Almost surely, 2^12320055672 is an apocalyptic number.

12320055672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12320055672 is an abundant number, since it is smaller than the sum of its proper divisors (18623034888).

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

12320055672 is a wasteful number, since it uses less digits than its factorization.

12320055672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2844 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

Adding to 12320055672 its reverse (27655002321), we get a palindrome (39975057993).

The spelling of 12320055672 in words is "twelve billion, three hundred twenty million, fifty-five thousand, six hundred seventy-two".