12646224648 has 108 divisors (see below), whose sum is σ = 35549747415. Its totient is φ = 4061143296.

The previous prime is 12646224641. The next prime is 12646224653. The reversal of 12646224648 is 84642264621.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

12646224648 is a `hidden beast` number, since 12 + 6 + 4 + 622 + 4 + 6 + 4 + 8 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 11142491364 + 1503733284 = 105558^2 + 38778^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=79518.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12646224641) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 27672036 + ... + 27672492.

Almost surely, 2^12646224648 is an apocalyptic number.

12646224648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12646224648

12646224648 is an abundant number, since it is smaller than the sum of its proper divisors (22903522767).

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

12646224648 is an equidigital number, since it uses as much as digits as its factorization.

12646224648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 491 counting only the distinct ones).

The product of its digits is 884736, while the sum is 45.

The spelling of 12646224648 in words is "twelve billion, six hundred forty-six million, two hundred twenty-four thousand, six hundred forty-eight".