12656122304 has 28 divisors (see below), whose sum is σ = 28702278384. Its totient is φ = 5424052224.

The previous prime is 12656122231. The next prime is 12656122309. The reversal of 12656122304 is 40322165621.

It is a tau number, because it is divible by the number of its divisors (28).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12656122309) 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, 14124689 + ... + 14125584.

Almost surely, 2^12656122304 is an apocalyptic number.

12656122304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12656122304 is an abundant number, since it is smaller than the sum of its proper divisors (16046156080).

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

12656122304 is an equidigital number, since it uses as much as digits as its factorization.

12656122304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28250292 (or 28250282 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 12656122304 its reverse (40322165621), we get a palindrome (52978287925).

The spelling of 12656122304 in words is "twelve billion, six hundred fifty-six million, one hundred twenty-two thousand, three hundred four".