326503304064 has 576 divisors, whose sum is σ = 1115227526400. Its totient is φ = 91405117440.

The previous prime is 326503304059. The next prime is 326503304077. The reversal of 326503304064 is 460403305623.

326503304064 is a `hidden beast` number, since 3 + 26 + 503 + 30 + 40 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 940931539 + ... + 940931885.

It is an arithmetic number, because the mean of its divisors is an integer number (1936158900).

Almost surely, 2^326503304064 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 326503304064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (557613763200).

326503304064 is an abundant number, since it is smaller than the sum of its proper divisors (788724222336).

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

326503304064 is a wasteful number, since it uses less digits than its factorization.

326503304064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 36.

Adding to 326503304064 its reverse (460403305623), we get a palindrome (786906609687).

The spelling of 326503304064 in words is "three hundred twenty-six billion, five hundred three million, three hundred four thousand, sixty-four".