324040053781 has 2 divisors, whose sum is σ = 324040053782. Its totient is φ = 324040053780.

The previous prime is 324040053773. The next prime is 324040053797. The reversal of 324040053781 is 187350040423.

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., 246279942756 + 77760111025 = 496266^2 + 278855^2 .

It is a cyclic number.

It is not a de Polignac number, because 324040053781 - 2³ = 324040053773 is a prime.

It is a super-2 number, since 2×324040053781² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 324040053781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324040053721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162020026890 + 162020026891.

It is an arithmetic number, because the mean of its divisors is an integer number (162020026891).

Almost surely, 2^324040053781 is an apocalyptic number.

It is an amenable number.

324040053781 is a deficient number, since it is larger than the sum of its proper divisors (1).

324040053781 is an equidigital number, since it uses as much as digits as its factorization.

324040053781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 324040053781 in words is "three hundred twenty-four billion, forty million, fifty-three thousand, seven hundred eighty-one".