9968555771 has 2 divisors, whose sum is σ = 9968555772. Its totient is φ = 9968555770.

The previous prime is 9968555759. The next prime is 9968555783. The reversal of 9968555771 is 1775558699.

9968555771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (9968555759) and next prime (9968555783).

It is a cyclic number.

It is not a de Polignac number, because 9968555771 - 2²² = 9964361467 is a prime.

It is not a weakly prime, because it can be changed into another prime (9968555731) 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, 4984277885 + 4984277886.

It is an arithmetic number, because the mean of its divisors is an integer number (4984277886).

Almost surely, 2^9968555771 is an apocalyptic number.

9968555771 is a deficient number, since it is larger than the sum of its proper divisors (1).

9968555771 is an equidigital number, since it uses as much as digits as its factorization.

9968555771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23814000, while the sum is 62.

The square root of 9968555771 is about 99842.6550678617. The cubic root of 9968555771 is about 2152.1741677690.

The spelling of 9968555771 in words is "nine billion, nine hundred sixty-eight million, five hundred fifty-five thousand, seven hundred seventy-one".