1329896389864 has 256 divisors, whose sum is σ = 3167141068800. Its totient is φ = 510957849600.

The previous prime is 1329896389849. The next prime is 1329896389867. The reversal of 1329896389864 is 4689836989231.

It is not an unprimeable number, because it can be changed into a prime (1329896389867) 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 63 ways as a sum of consecutive naturals, for example, 338307979 + ... + 338311909.

It is an arithmetic number, because the mean of its divisors is an integer number (12371644800).

Almost surely, 2^{1329896389864} is an apocalyptic number.

1329896389864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1329896389864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583570534400).

1329896389864 is an abundant number, since it is smaller than the sum of its proper divisors (1837244678936).

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

1329896389864 is a wasteful number, since it uses less digits than its factorization.

1329896389864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4264 (or 4260 counting only the distinct ones).

The product of its digits is 967458816, while the sum is 76.

The spelling of 1329896389864 in words is "one trillion, three hundred twenty-nine billion, eight hundred ninety-six million, three hundred eighty-nine thousand, eight hundred sixty-four".