9964366081 has 2 divisors, whose sum is σ = 9964366082. Its totient is φ = 9964366080.

The previous prime is 9964366051. The next prime is 9964366091. The reversal of 9964366081 is 1806634699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9837465856 + 126900225 = 99184^2 + 11265^2 .

It is a cyclic number.

It is not a de Polignac number, because 9964366081 - 2⁹ = 9964365569 is a prime.

It is a super-2 number, since 2×9964366081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9964366001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982183040 + 4982183041.

It is an arithmetic number, because the mean of its divisors is an integer number (4982183041).

Almost surely, 2^9964366081 is an apocalyptic number.

It is an amenable number.

9964366081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9964366081 is an equidigital number, since it uses as much as digits as its factorization.

9964366081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 9964366081 is about 99821.6713995513. The cubic root of 9964366081 is about 2151.8726126813.

The spelling of 9964366081 in words is "nine billion, nine hundred sixty-four million, three hundred sixty-six thousand, eighty-one".