320260006663 has 4 divisors (see below), whose sum is σ = 323094166128. Its totient is φ = 317425847200.

The previous prime is 320260006541. The next prime is 320260006673. The reversal of 320260006663 is 366600062023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366600062023 = 13 ⋅28200004771.

It is a cyclic number.

It is not a de Polignac number, because 320260006663 - 2³³ = 311670072071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320260006673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1417079563 + ... + 1417079788.

It is an arithmetic number, because the mean of its divisors is an integer number (80773541532).

Almost surely, 2^320260006663 is an apocalyptic number.

320260006663 is a deficient number, since it is larger than the sum of its proper divisors (2834159465).

320260006663 is a wasteful number, since it uses less digits than its factorization.

320260006663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834159464.

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 320260006663 its reverse (366600062023), we get a palindrome (686860068686).

The spelling of 320260006663 in words is "three hundred twenty billion, two hundred sixty million, six thousand, six hundred sixty-three".