324120181961 has 2 divisors, whose sum is σ = 324120181962. Its totient is φ = 324120181960.

The previous prime is 324120181951. The next prime is 324120181981. The reversal of 324120181961 is 169181021423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320559792400 + 3560389561 = 566180^2 + 59669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-324120181961 is a prime.

It is not a weakly prime, because it can be changed into another prime (324120181951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162060090980 + 162060090981.

It is an arithmetic number, because the mean of its divisors is an integer number (162060090981).

Almost surely, 2^324120181961 is an apocalyptic number.

It is an amenable number.

324120181961 is a deficient number, since it is larger than the sum of its proper divisors (1).

324120181961 is an equidigital number, since it uses as much as digits as its factorization.

324120181961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 38.

The spelling of 324120181961 in words is "three hundred twenty-four billion, one hundred twenty million, one hundred eighty-one thousand, nine hundred sixty-one".