15989852881 has 2 divisors, whose sum is σ = 15989852882. Its totient is φ = 15989852880.

The previous prime is 15989852821. The next prime is 15989852897. The reversal of 15989852881 is 18825898951.

15989852881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13372609600 + 2617243281 = 115640^2 + 51159^2 .

It is a cyclic number.

It is not a de Polignac number, because 15989852881 - 2¹⁵ = 15989820113 is a prime.

It is a super-2 number, since 2×15989852881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15989852821) 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, 7994926440 + 7994926441.

It is an arithmetic number, because the mean of its divisors is an integer number (7994926441).

Almost surely, 2^15989852881 is an apocalyptic number.

It is an amenable number.

15989852881 is a deficient number, since it is larger than the sum of its proper divisors (1).

15989852881 is an equidigital number, since it uses as much as digits as its factorization.

15989852881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16588800, while the sum is 64.

The spelling of 15989852881 in words is "fifteen billion, nine hundred eighty-nine million, eight hundred fifty-two thousand, eight hundred eighty-one".