9999888886667 has 2 divisors, whose sum is σ = 9999888886668. Its totient is φ = 9999888886666.

The previous prime is 9999888886661. The next prime is 9999888886703. The reversal of 9999888886667 is 7666888889999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9999888886667 - 2²⁰ = 9999887838091 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999888886661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999944443333 + 4999944443334.

It is an arithmetic number, because the mean of its divisors is an integer number (4999944443334).

Almost surely, 2^{9999888886667} is an apocalyptic number.

9999888886667 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999888886667 is an equidigital number, since it uses as much as digits as its factorization.

9999888886667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 325066162176, while the sum is 101.

The spelling of 9999888886667 in words is "nine trillion, nine hundred ninety-nine billion, eight hundred eighty-eight million, eight hundred eighty-six thousand, six hundred sixty-seven".