321642064356 has 48 divisors (see below), whose sum is σ = 752061031680. Its totient is φ = 106990895520.

The previous prime is 321642064309. The next prime is 321642064399. The reversal of 321642064356 is 653460246123.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22949391 + ... + 22963401.

It is an arithmetic number, because the mean of its divisors is an integer number (15667938160).

Almost surely, 2^321642064356 is an apocalyptic number.

It is an amenable number.

321642064356 is an abundant number, since it is smaller than the sum of its proper divisors (430418967324).

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

321642064356 is a wasteful number, since it uses less digits than its factorization.

321642064356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17864 (or 17862 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 321642064356 in words is "three hundred twenty-one billion, six hundred forty-two million, sixty-four thousand, three hundred fifty-six".