1328507680768 has 48 divisors (see below), whose sum is σ = 2706487023240. Its totient is φ = 651720695808.

The previous prime is 1328507680763. The next prime is 1328507680813. The reversal of 1328507680768 is 8670867058231.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328507680763) 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, 6011130 + ... + 6228217.

Almost surely, 2^{1328507680768} is an apocalyptic number.

It is an amenable number.

1328507680768 is an abundant number, since it is smaller than the sum of its proper divisors (1377979342472).

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

1328507680768 is an equidigital number, since it uses as much as digits as its factorization.

1328507680768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12239422 (or 12239402 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 1328507680768 in words is "one trillion, three hundred twenty-eight billion, five hundred seven million, six hundred eighty thousand, seven hundred sixty-eight".