13884668973881 has 2 divisors, whose sum is σ = 13884668973882. Its totient is φ = 13884668973880.

The previous prime is 13884668973863. The next prime is 13884668973913. The reversal of 13884668973881 is 18837986648831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9708776723881 + 4175892250000 = 3115891^2 + 2043500^2 .

It is a cyclic number.

It is not a de Polignac number, because 13884668973881 - 2⁶ = 13884668973817 is a prime.

It is a super-2 number, since 2×13884668973881² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13884668973796 and 13884668973805.

It is not a weakly prime, because it can be changed into another prime (13884668976881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942334486940 + 6942334486941.

It is an arithmetic number, because the mean of its divisors is an integer number (6942334486941).

Almost surely, 2^{13884668973881} is an apocalyptic number.

It is an amenable number.

13884668973881 is a deficient number, since it is larger than the sum of its proper divisors (1).

13884668973881 is an equidigital number, since it uses as much as digits as its factorization.

13884668973881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2675441664, while the sum is 80.

The spelling of 13884668973881 in words is "thirteen trillion, eight hundred eighty-four billion, six hundred sixty-eight million, nine hundred seventy-three thousand, eight hundred eighty-one".