321365546420656 has 10 divisors (see below), whose sum is σ = 622645746190052. Its totient is φ = 160682773210320.

The previous prime is 321365546420627. The next prime is 321365546420683. The reversal of 321365546420656 is 656024645563123.

It is a self number, because there is not a number n which added to its sum of digits gives 321365546420656.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10042673325630 + ... + 10042673325661.

Almost surely, 2^{321365546420656} is an apocalyptic number.

It is an amenable number.

321365546420656 is a deficient number, since it is larger than the sum of its proper divisors (301280199769396).

321365546420656 is a wasteful number, since it uses less digits than its factorization.

321365546420656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20085346651299 (or 20085346651293 counting only the distinct ones).

The product of its (nonzero) digits is 93312000, while the sum is 58.

The spelling of 321365546420656 in words is "three hundred twenty-one trillion, three hundred sixty-five billion, five hundred forty-six million, four hundred twenty thousand, six hundred fifty-six".