320485281385 has 8 divisors (see below), whose sum is σ = 384691398336. Its totient is φ = 256315518000.

The previous prime is 320485281379. The next prime is 320485281407. The reversal of 320485281385 is 583182584023.

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

It is not a de Polignac number, because 320485281385 - 2³ = 320485281377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9068991 + ... + 9104260.

It is an arithmetic number, because the mean of its divisors is an integer number (48086424792).

Almost surely, 2^320485281385 is an apocalyptic number.

It is an amenable number.

320485281385 is a deficient number, since it is larger than the sum of its proper divisors (64206116951).

320485281385 is a wasteful number, since it uses less digits than its factorization.

320485281385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18176783.

The product of its (nonzero) digits is 1843200, while the sum is 49.

The spelling of 320485281385 in words is "three hundred twenty billion, four hundred eighty-five million, two hundred eighty-one thousand, three hundred eighty-five".