324840648521 has 2 divisors, whose sum is σ = 324840648522. Its totient is φ = 324840648520.

The previous prime is 324840648491. The next prime is 324840648551. The reversal of 324840648521 is 125846048423.

It is a balanced prime because it is at equal distance from previous prime (324840648491) and next prime (324840648551).

It can be written as a sum of positive squares in only one way, i.e., 294131590921 + 30709057600 = 542339^2 + 175240^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-324840648521 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (324840648551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162420324260 + 162420324261.

It is an arithmetic number, because the mean of its divisors is an integer number (162420324261).

Almost surely, 2^324840648521 is an apocalyptic number.

It is an amenable number.

324840648521 is a deficient number, since it is larger than the sum of its proper divisors (1).

324840648521 is an equidigital number, since it uses as much as digits as its factorization.

324840648521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1474560, while the sum is 47.

The spelling of 324840648521 in words is "three hundred twenty-four billion, eight hundred forty million, six hundred forty-eight thousand, five hundred twenty-one".