1329596395920 has 1600 divisors, whose sum is σ = 5472076431360. Its totient is φ = 296284262400.

The previous prime is 1329596395913. The next prime is 1329596395961. The reversal of 1329596395920 is 295936959231.

1329596395920 is a `hidden beast` number, since 1 + 3 + 2 + 9 + 5 + 9 + 6 + 39 + 592 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 6301404615 + ... + 6301404825.

Almost surely, 2^{1329596395920} is an apocalyptic number.

1329596395920 is a gapful number since it is divisible by the number (10) 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 1329596395920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2736038215680).

1329596395920 is an abundant number, since it is smaller than the sum of its proper divisors (4142480035440).

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

1329596395920 is a wasteful number, since it uses less digits than its factorization.

1329596395920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 35429400, while the sum is 63.

The spelling of 1329596395920 in words is "one trillion, three hundred twenty-nine billion, five hundred ninety-six million, three hundred ninety-five thousand, nine hundred twenty".