326385722340520 has 16 divisors (see below), whose sum is σ = 734367875266260. Its totient is φ = 130554288936192.

The previous prime is 326385722340449. The next prime is 326385722340541. The reversal of 326385722340520 is 25043227583623.

It can be written as a sum of positive squares in 2 ways, for example, as 308758807113156 + 17626915227364 = 17571534^2 + 4198442^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4079821529217 + ... + 4079821529296.

Almost surely, 2^{326385722340520} is an apocalyptic number.

It is an amenable number.

326385722340520 is an abundant number, since it is smaller than the sum of its proper divisors (407982152925740).

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

326385722340520 is a wasteful number, since it uses less digits than its factorization.

326385722340520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8159643058524 (or 8159643058520 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 52.

The spelling of 326385722340520 in words is "three hundred twenty-six trillion, three hundred eighty-five billion, seven hundred twenty-two million, three hundred forty thousand, five hundred twenty".