9966115867 has 2 divisors, whose sum is σ = 9966115868. Its totient is φ = 9966115866.

The previous prime is 9966115837. The next prime is 9966115883. The reversal of 9966115867 is 7685116699.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9966115867 - 2¹⁹ = 9965591579 is a prime.

It is not a weakly prime, because it can be changed into another prime (9966115837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4983057933 + 4983057934.

It is an arithmetic number, because the mean of its divisors is an integer number (4983057934).

Almost surely, 2^9966115867 is an apocalyptic number.

9966115867 is a deficient number, since it is larger than the sum of its proper divisors (1).

9966115867 is an equidigital number, since it uses as much as digits as its factorization.

9966115867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 9966115867 is about 99830.4355745281. The cubic root of 9966115867 is about 2151.9985647041.

The spelling of 9966115867 in words is "nine billion, nine hundred sixty-six million, one hundred fifteen thousand, eight hundred sixty-seven".