9966333953 has 2 divisors, whose sum is σ = 9966333954. Its totient is φ = 9966333952.

The previous prime is 9966333947. The next prime is 9966334069. The reversal of 9966333953 is 3593336699.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6692548864 + 3273785089 = 81808^2 + 57217^2 .

It is a cyclic number.

It is not a de Polignac number, because 9966333953 - 2²⁰ = 9965285377 is a prime.

It is not a weakly prime, because it can be changed into another prime (9966333943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983166976 + 4983166977.

It is an arithmetic number, because the mean of its divisors is an integer number (4983166977).

Almost surely, 2^9966333953 is an apocalyptic number.

It is an amenable number.

9966333953 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966333953 is an equidigital number, since it uses as much as digits as its factorization.

9966333953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10628820, while the sum is 56.

The square root of 9966333953 is about 99831.5278506745. The cubic root of 9966333953 is about 2152.0142618036.

The spelling of 9966333953 in words is "nine billion, nine hundred sixty-six million, three hundred thirty-three thousand, nine hundred fifty-three".