9966093457 has 2 divisors, whose sum is σ = 9966093458. Its totient is φ = 9966093456.

The previous prime is 9966093433. The next prime is 9966093461. The reversal of 9966093457 is 7543906699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7674460816 + 2291632641 = 87604^2 + 47871^2 .

It is a cyclic number.

It is not a de Polignac number, because 9966093457 - 2¹⁹ = 9965569169 is a prime.

It is not a weakly prime, because it can be changed into another prime (9966013457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983046728 + 4983046729.

It is an arithmetic number, because the mean of its divisors is an integer number (4983046729).

Almost surely, 2^9966093457 is an apocalyptic number.

It is an amenable number.

9966093457 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966093457 is an equidigital number, since it uses as much as digits as its factorization.

9966093457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11022480, while the sum is 58.

The square root of 9966093457 is about 99830.3233341453. The cubic root of 9966093457 is about 2151.9969516945.

The spelling of 9966093457 in words is "nine billion, nine hundred sixty-six million, ninety-three thousand, four hundred fifty-seven".