329720320385 has 8 divisors (see below), whose sum is σ = 396798095400. Its totient is φ = 263020449024.

The previous prime is 329720320367. The next prime is 329720320399. The reversal of 329720320385 is 583023027923.

It can be written as a sum of positive squares in 4 ways, for example, as 28960211329 + 300760109056 = 170177^2 + 548416^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-329720320385 is a prime.

It is a super-3 number, since 3×329720320385³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 94473992 + ... + 94477481.

It is an arithmetic number, because the mean of its divisors is an integer number (49599761925).

Almost surely, 2^329720320385 is an apocalyptic number.

It is an amenable number.

329720320385 is a deficient number, since it is larger than the sum of its proper divisors (67077775015).

329720320385 is a wasteful number, since it uses less digits than its factorization.

329720320385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188951827.

The product of its (nonzero) digits is 544320, while the sum is 44.

The spelling of 329720320385 in words is "three hundred twenty-nine billion, seven hundred twenty million, three hundred twenty thousand, three hundred eighty-five".