321659830940066 has 4 divisors (see below), whose sum is σ = 482489746410102. Its totient is φ = 160829915470032.

The previous prime is 321659830940057. The next prime is 321659830940081. The reversal of 321659830940066 is 660049038956123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 292350871189441 + 29308959750625 = 17098271^2 + 5413775^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321659830939990 and 321659830940008.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80414957735015 + ... + 80414957735018.

Almost surely, 2^{321659830940066} is an apocalyptic number.

321659830940066 is a deficient number, since it is larger than the sum of its proper divisors (160829915470036).

321659830940066 is a wasteful number, since it uses less digits than its factorization.

321659830940066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160829915470035.

The product of its (nonzero) digits is 50388480, while the sum is 62.

The spelling of 321659830940066 in words is "three hundred twenty-one trillion, six hundred fifty-nine billion, eight hundred thirty million, nine hundred forty thousand, sixty-six".