9966455579 has 2 divisors, whose sum is σ = 9966455580. Its totient is φ = 9966455578.

The previous prime is 9966455573. The next prime is 9966455593. The reversal of 9966455579 is 9755546699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9966455579 - 2¹² = 9966451483 is a prime.

It is not a weakly prime, because it can be changed into another prime (9966455573) 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, 4983227789 + 4983227790.

It is an arithmetic number, because the mean of its divisors is an integer number (4983227790).

Almost surely, 2^9966455579 is an apocalyptic number.

9966455579 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966455579 is an equidigital number, since it uses as much as digits as its factorization.

9966455579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854000, while the sum is 65.

The square root of 9966455579 is about 99832.1370050747. The cubic root of 9966455579 is about 2152.0230159360.

The spelling of 9966455579 in words is "nine billion, nine hundred sixty-six million, four hundred fifty-five thousand, five hundred seventy-nine".