321797403648 has 792 divisors, whose sum is σ = 1130752057344. Its totient is φ = 87787929600.

The previous prime is 321797403637. The next prime is 321797403671. The reversal of 321797403648 is 846304797123.

321797403648 is a `hidden beast` number, since 3 + 2 + 179 + 7 + 403 + 64 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 321797403594 and 321797403603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1777886118 + ... + 1777886298.

Almost surely, 2^321797403648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321797403648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565376028672).

321797403648 is an abundant number, since it is smaller than the sum of its proper divisors (808954653696).

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

321797403648 is a wasteful number, since it uses less digits than its factorization.

321797403648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 321797403648 in words is "three hundred twenty-one billion, seven hundred ninety-seven million, four hundred three thousand, six hundred forty-eight".