320490553666 has 8 divisors (see below), whose sum is σ = 480751833744. Its totient is φ = 160239942420.

The previous prime is 320490553613. The next prime is 320490553679. The reversal of 320490553666 is 666355094023.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2591680 + ... + 2712523.

It is an arithmetic number, because the mean of its divisors is an integer number (60093979218).

Almost surely, 2^320490553666 is an apocalyptic number.

320490553666 is a deficient number, since it is larger than the sum of its proper divisors (160261280078).

320490553666 is a wasteful number, since it uses less digits than its factorization.

320490553666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5334416.

The product of its (nonzero) digits is 3499200, while the sum is 49.

The spelling of 320490553666 in words is "three hundred twenty billion, four hundred ninety million, five hundred fifty-three thousand, six hundred sixty-six".