327487619681 has 2 divisors, whose sum is σ = 327487619682. Its totient is φ = 327487619680.

The previous prime is 327487619677. The next prime is 327487619731. The reversal of 327487619681 is 186916784723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220961104225 + 106526515456 = 470065^2 + 326384^2 .

It is a cyclic number.

It is not a de Polignac number, because 327487619681 - 2² = 327487619677 is a prime.

It is a super-2 number, since 2×327487619681² (a number of 24 digits) contains 22 as substring.

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 (327487619621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163743809840 + 163743809841.

It is an arithmetic number, because the mean of its divisors is an integer number (163743809841).

Almost surely, 2^327487619681 is an apocalyptic number.

It is an amenable number.

327487619681 is a deficient number, since it is larger than the sum of its proper divisors (1).

327487619681 is an equidigital number, since it uses as much as digits as its factorization.

327487619681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24385536, while the sum is 62.

The spelling of 327487619681 in words is "three hundred twenty-seven billion, four hundred eighty-seven million, six hundred nineteen thousand, six hundred eighty-one".