12646667748 has 192 divisors, whose sum is σ = 36632494080. Its totient is φ = 3338496000.

The previous prime is 12646667731. The next prime is 12646667777. The reversal of 12646667748 is 84776664621.

It is a Harshad number since it is a multiple of its sum of digits (57).

Its product of digits (16257024) is a multiple of the sum of its prime divisors (1536).

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 10986973 + ... + 10988123.

It is an arithmetic number, because the mean of its divisors is an integer number (190794240).

Almost surely, 2^12646667748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12646667748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18316247040).

12646667748 is an abundant number, since it is smaller than the sum of its proper divisors (23985826332).

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

12646667748 is a wasteful number, since it uses less digits than its factorization.

12646667748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1536 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 57.

The spelling of 12646667748 in words is "twelve billion, six hundred forty-six million, six hundred sixty-seven thousand, seven hundred forty-eight".