324040053721 has 2 divisors, whose sum is σ = 324040053722. Its totient is φ = 324040053720.

The previous prime is 324040053683. The next prime is 324040053773. The reversal of 324040053721 is 127350040423.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207035010121 + 117005043600 = 455011^2 + 342060^2 .

It is a cyclic number.

It is not a de Polignac number, because 324040053721 - 2⁷ = 324040053593 is a prime.

It is not a weakly prime, because it can be changed into another prime (324040053781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162020026860 + 162020026861.

It is an arithmetic number, because the mean of its divisors is an integer number (162020026861).

Almost surely, 2^324040053721 is an apocalyptic number.

It is an amenable number.

324040053721 is a deficient number, since it is larger than the sum of its proper divisors (1).

324040053721 is an equidigital number, since it uses as much as digits as its factorization.

324040053721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 31.

The spelling of 324040053721 in words is "three hundred twenty-four billion, forty million, fifty-three thousand, seven hundred twenty-one".