999998881067 has 2 divisors, whose sum is σ = 999998881068. Its totient is φ = 999998881066.

The previous prime is 999998881061. The next prime is 999998881087. The reversal of 999998881067 is 760188899999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999998881067 - 2³⁰ = 998925139243 is a prime.

It is a super-2 number, since 2×999998881067² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999998881061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999440533 + 499999440534.

It is an arithmetic number, because the mean of its divisors is an integer number (499999440534).

Almost surely, 2^999998881067 is an apocalyptic number.

999998881067 is a deficient number, since it is larger than the sum of its proper divisors (1).

999998881067 is an equidigital number, since it uses as much as digits as its factorization.

999998881067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1269789696, while the sum is 83.

The spelling of 999998881067 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eighty-one thousand, sixty-seven".