324054521981 has 2 divisors, whose sum is σ = 324054521982. Its totient is φ = 324054521980.

The previous prime is 324054521957. The next prime is 324054522013. The reversal of 324054521981 is 189125450423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175344025081 + 148710496900 = 418741^2 + 385630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-324054521981 is a prime.

It is a super-2 number, since 2×324054521981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324054521281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162027260990 + 162027260991.

It is an arithmetic number, because the mean of its divisors is an integer number (162027260991).

Almost surely, 2^324054521981 is an apocalyptic number.

It is an amenable number.

324054521981 is a deficient number, since it is larger than the sum of its proper divisors (1).

324054521981 is an equidigital number, since it uses as much as digits as its factorization.

324054521981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 324054521981 in words is "three hundred twenty-four billion, fifty-four million, five hundred twenty-one thousand, nine hundred eighty-one".