326505460320 has 576 divisors, whose sum is σ = 1231683957504. Its totient is φ = 78254346240.

The previous prime is 326505460297. The next prime is 326505460321. The reversal of 326505460320 is 23064505623.

326505460320 is a `hidden beast` number, since 3 + 26 + 5 + 0 + 5 + 4 + 603 + 20 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326505460321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 472511175 + ... + 472511865.

It is an arithmetic number, because the mean of its divisors is an integer number (2138340204).

Almost surely, 2^326505460320 is an apocalyptic number.

326505460320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326505460320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615841978752).

326505460320 is an abundant number, since it is smaller than the sum of its proper divisors (905178497184).

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

326505460320 is a wasteful number, since it uses less digits than its factorization.

326505460320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1344 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 36.

Adding to 326505460320 its reverse (23064505623), we get a palindrome (349569965943).

The spelling of 326505460320 in words is "three hundred twenty-six billion, five hundred five million, four hundred sixty thousand, three hundred twenty".