320626046221660 has 24 divisors (see below), whose sum is σ = 675507904560720. Its totient is φ = 127832664680064.

The previous prime is 320626046221651. The next prime is 320626046221753. The reversal of 320626046221660 is 66122640626023.

It is a self number, because there is not a number n which added to its sum of digits gives 320626046221660.

It is a congruent 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, 26109606745 + ... + 26109619024.

It is an arithmetic number, because the mean of its divisors is an integer number (28146162690030).

Almost surely, 2^{320626046221660} is an apocalyptic number.

It is an amenable number.

320626046221660 is an abundant number, since it is smaller than the sum of its proper divisors (354881858339060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320626046221660 is a wasteful number, since it uses less digits than its factorization.

320626046221660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52219226085 (or 52219226083 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 46.

Adding to 320626046221660 its reverse (66122640626023), we get a palindrome (386748686847683).

The spelling of 320626046221660 in words is "three hundred twenty trillion, six hundred twenty-six billion, forty-six million, two hundred twenty-one thousand, six hundred sixty".