321056666164 has 12 divisors (see below), whose sum is σ = 605068332484. Its totient is φ = 148179999744.

The previous prime is 321056666129. The next prime is 321056666213. The reversal of 321056666164 is 461666650123.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 93355913764 + 227700752400 = 305542^2 + 477180^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3087083277 + ... + 3087083380.

Almost surely, 2^321056666164 is an apocalyptic number.

It is an amenable number.

321056666164 is a deficient number, since it is larger than the sum of its proper divisors (284011666320).

321056666164 is a wasteful number, since it uses less digits than its factorization.

321056666164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174166674 (or 6174166672 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 321056666164 in words is "three hundred twenty-one billion, fifty-six million, six hundred sixty-six thousand, one hundred sixty-four".