321394210536 has 128 divisors (see below), whose sum is σ = 950944147200. Its totient is φ = 88566159360.

The previous prime is 321394210531. The next prime is 321394210601. The reversal of 321394210536 is 635012493123.

It is a junction number, because it is equal to n+sod(n) for n = 321394210494 and 321394210503.

It is not an unprimeable number, because it can be changed into a prime (321394210531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4608406 + ... + 4677626.

It is an arithmetic number, because the mean of its divisors is an integer number (7429251150).

Almost surely, 2^321394210536 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 321394210536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (475472073600).

321394210536 is an abundant number, since it is smaller than the sum of its proper divisors (629549936664).

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

321394210536 is a wasteful number, since it uses less digits than its factorization.

321394210536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70219 (or 70215 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The spelling of 321394210536 in words is "three hundred twenty-one billion, three hundred ninety-four million, two hundred ten thousand, five hundred thirty-six".