3867324728881 has 2 divisors, whose sum is σ = 3867324728882. Its totient is φ = 3867324728880.

The previous prime is 3867324728863. The next prime is 3867324728933. The reversal of 3867324728881 is 1888274237683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3265483914225 + 601840814656 = 1807065^2 + 775784^2 .

It is an emirp because it is prime and its reverse (1888274237683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3867324728881 - 2⁷ = 3867324728753 is a prime.

It is a super-2 number, since 2×3867324728881² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3867324708881) 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, 1933662364440 + 1933662364441.

It is an arithmetic number, because the mean of its divisors is an integer number (1933662364441).

Almost surely, 2^{3867324728881} is an apocalyptic number.

It is an amenable number.

3867324728881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3867324728881 is an equidigital number, since it uses as much as digits as its factorization.

3867324728881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 173408256, while the sum is 67.

The spelling of 3867324728881 in words is "three trillion, eight hundred sixty-seven billion, three hundred twenty-four million, seven hundred twenty-eight thousand, eight hundred eighty-one".