999988886667 has 8 divisors (see below), whose sum is σ = 1350195965440. Its totient is φ = 658220532840.

The previous prime is 999988886569. The next prime is 999988886681. The reversal of 999988886667 is 766688889999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 999988886667 - 2⁸ = 999988886411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999988888667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2109680959 + ... + 2109681432.

It is an arithmetic number, because the mean of its divisors is an integer number (168774495680).

Almost surely, 2^999988886667 is an apocalyptic number.

999988886667 is a deficient number, since it is larger than the sum of its proper divisors (350207078773).

999988886667 is a wasteful number, since it uses less digits than its factorization.

999988886667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219362473.

The product of its digits is 40633270272, while the sum is 93.

The spelling of 999988886667 in words is "nine hundred ninety-nine billion, nine hundred eighty-eight million, eight hundred eighty-six thousand, six hundred sixty-seven".