1328843521472 has 14 divisors (see below), whose sum is σ = 2636923863048. Its totient is φ = 664421760704.

The previous prime is 1328843521429. The next prime is 1328843521493. The reversal of 1328843521472 is 2741253488231.

It is a self number, because there is not a number n which added to its sum of digits gives 1328843521472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381589948 + ... + 10381590075.

Almost surely, 2^{1328843521472} is an apocalyptic number.

It is an amenable number.

1328843521472 is a deficient number, since it is larger than the sum of its proper divisors (1308080341576).

1328843521472 is an equidigital number, since it uses as much as digits as its factorization.

1328843521472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763180035 (or 20763180025 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

The spelling of 1328843521472 in words is "one trillion, three hundred twenty-eight billion, eight hundred forty-three million, five hundred twenty-one thousand, four hundred seventy-two".