326021342164144 has 80 divisors (see below), whose sum is σ = 705980820898080. Its totient is φ = 144560057600000.

The previous prime is 326021342164129. The next prime is 326021342164153. The reversal of 326021342164144 is 441461243120623.

It is a self number, because there is not a number n which added to its sum of digits gives 326021342164144.

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, 58685862 + ... + 64000570.

It is an arithmetic number, because the mean of its divisors is an integer number (8824760261226).

Almost surely, 2^{326021342164144} 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 326021342164144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352990410449040).

326021342164144 is an abundant number, since it is smaller than the sum of its proper divisors (379959478733936).

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

326021342164144 is a wasteful number, since it uses less digits than its factorization.

326021342164144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323270 (or 5323264 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 43.

Adding to 326021342164144 its reverse (441461243120623), we get a palindrome (767482585284767).

The spelling of 326021342164144 in words is "three hundred twenty-six trillion, twenty-one billion, three hundred forty-two million, one hundred sixty-four thousand, one hundred forty-four".