968569727981 has 2 divisors, whose sum is σ = 968569727982. Its totient is φ = 968569727980.

The previous prime is 968569727959. The next prime is 968569728013. The reversal of 968569727981 is 189727965869.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 965178529225 + 3391198756 = 982435^2 + 58234^2 .

It is a cyclic number.

It is not a de Polignac number, because 968569727981 - 2³⁸ = 693691821037 is a prime.

It is a super-2 number, since 2×968569727981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (968569327981) 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, 484284863990 + 484284863991.

It is an arithmetic number, because the mean of its divisors is an integer number (484284863991).

Almost surely, 2^968569727981 is an apocalyptic number.

It is an amenable number.

968569727981 is a deficient number, since it is larger than the sum of its proper divisors (1).

968569727981 is an equidigital number, since it uses as much as digits as its factorization.

968569727981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 823011840, while the sum is 77.

The spelling of 968569727981 in words is "nine hundred sixty-eight billion, five hundred sixty-nine million, seven hundred twenty-seven thousand, nine hundred eighty-one".