9966366451 has 2 divisors, whose sum is σ = 9966366452. Its totient is φ = 9966366450.

The previous prime is 9966366427. The next prime is 9966366499. The reversal of 9966366451 is 1546636699.

9966366451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9966366451 - 2³¹ = 7818882803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9966366392 and 9966366401.

It is not a weakly prime, because it can be changed into another prime (9966360451) 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, 4983183225 + 4983183226.

It is an arithmetic number, because the mean of its divisors is an integer number (4983183226).

Almost surely, 2^9966366451 is an apocalyptic number.

9966366451 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966366451 is an equidigital number, since it uses as much as digits as its factorization.

9966366451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 55.

The square root of 9966366451 is about 99831.6906147542. The cubic root of 9966366451 is about 2152.0166008811.

The spelling of 9966366451 in words is "nine billion, nine hundred sixty-six million, three hundred sixty-six thousand, four hundred fifty-one".