320485281388 has 6 divisors (see below), whose sum is σ = 560849242436. Its totient is φ = 160242640692.

The previous prime is 320485281379. The next prime is 320485281407. The reversal of 320485281388 is 883182584023.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40060660170 + ... + 40060660177.

Almost surely, 2^320485281388 is an apocalyptic number.

It is an amenable number.

320485281388 is a deficient number, since it is larger than the sum of its proper divisors (240363961048).

320485281388 is a wasteful number, since it uses less digits than its factorization.

320485281388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80121320351 (or 80121320349 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 320485281388 in words is "three hundred twenty billion, four hundred eighty-five million, two hundred eighty-one thousand, three hundred eighty-eight".