320440451329 has 8 divisors (see below), whose sum is σ = 323678721600. Its totient is φ = 317204627376.

The previous prime is 320440451327. The next prime is 320440451341. The reversal of 320440451329 is 923154044023.

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

It is a cyclic number.

It is not a de Polignac number, because 320440451329 - 2¹ = 320440451327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320440451323) 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 7 ways as a sum of consecutive naturals, for example, 347707 + ... + 872800.

It is an arithmetic number, because the mean of its divisors is an integer number (40459840200).

Almost surely, 2^320440451329 is an apocalyptic number.

It is an amenable number.

320440451329 is a deficient number, since it is larger than the sum of its proper divisors (3238270271).

320440451329 is a wasteful number, since it uses less digits than its factorization.

320440451329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223159.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 320440451329 in words is "three hundred twenty billion, four hundred forty million, four hundred fifty-one thousand, three hundred twenty-nine".