321501660506412 has 12 divisors (see below), whose sum is σ = 750170541181656. Its totient is φ = 107167220168800.

The previous prime is 321501660506311. The next prime is 321501660506441. The reversal of 321501660506412 is 214605066105123.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×321501660506412² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13395902521089 + ... + 13395902521112.

It is an arithmetic number, because the mean of its divisors is an integer number (62514211765138).

Almost surely, 2^{321501660506412} is an apocalyptic number.

It is an amenable number.

321501660506412 is an abundant number, since it is smaller than the sum of its proper divisors (428668880675244).

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

321501660506412 is a wasteful number, since it uses less digits than its factorization.

321501660506412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26791805042208 (or 26791805042206 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 321501660506412 in words is "three hundred twenty-one trillion, five hundred one billion, six hundred sixty million, five hundred six thousand, four hundred twelve".