1328590031664 has 80 divisors (see below), whose sum is σ = 3953389887488. Its totient is φ = 376608185856.

The previous prime is 1328590031663. The next prime is 1328590031669. The reversal of 1328590031664 is 4661300958231.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1328590031663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15524797 + ... + 15610140.

Almost surely, 2^{1328590031664} is an apocalyptic number.

1328590031664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1328590031664 is an abundant number, since it is smaller than the sum of its proper divisors (2624799855824).

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

1328590031664 is a wasteful number, since it uses less digits than its factorization.

1328590031664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31135082 (or 31135076 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

Adding to 1328590031664 its reverse (4661300958231), we get a palindrome (5989890989895).

The spelling of 1328590031664 in words is "one trillion, three hundred twenty-eight billion, five hundred ninety million, thirty-one thousand, six hundred sixty-four".