12762321328 has 80 divisors (see below), whose sum is σ = 27403246080. Its totient is φ = 5727147008.

The previous prime is 12762321307. The next prime is 12762321349. The reversal of 12762321328 is 82312326721.

It is an interprime number because it is at equal distance from previous prime (12762321307) and next prime (12762321349).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2167893 + ... + 2173771.

It is an arithmetic number, because the mean of its divisors is an integer number (342540576).

Almost surely, 2^12762321328 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 12762321328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13701623040).

12762321328 is an abundant number, since it is smaller than the sum of its proper divisors (14640924752).

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

12762321328 is a wasteful number, since it uses less digits than its factorization.

12762321328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6274 (or 6268 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The spelling of 12762321328 in words is "twelve billion, seven hundred sixty-two million, three hundred twenty-one thousand, three hundred twenty-eight".