321341745560 has 256 divisors, whose sum is σ = 830370078720. Its totient is φ = 110854656000.

The previous prime is 321341745553. The next prime is 321341745649. The reversal of 321341745560 is 65547143123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180224429 + ... + 180226211.

It is an arithmetic number, because the mean of its divisors is an integer number (3243633120).

Almost surely, 2^321341745560 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 321341745560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415185039360).

321341745560 is an abundant number, since it is smaller than the sum of its proper divisors (509028333160).

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

321341745560 is a wasteful number, since it uses less digits than its factorization.

321341745560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2090 (or 2086 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

Adding to 321341745560 its reverse (65547143123), we get a palindrome (386888888683).

The spelling of 321341745560 in words is "three hundred twenty-one billion, three hundred forty-one million, seven hundred forty-five thousand, five hundred sixty".