999999998533 has 2 divisors, whose sum is σ = 999999998534. Its totient is φ = 999999998532.

The previous prime is 999999998531. The next prime is 999999998567. The reversal of 999999998533 is 335899999999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 619505945569 + 380494052964 = 787087^2 + 616842^2 .

It is a cyclic number.

It is not a de Polignac number, because 999999998533 - 2¹ = 999999998531 is a prime.

Together with 999999998531, it forms a pair of twin primes.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999999998531) 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, 499999999266 + 499999999267.

It is an arithmetic number, because the mean of its divisors is an integer number (499999999267).

Almost surely, 2^999999998533 is an apocalyptic number.

It is an amenable number.

999999998533 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999998533 is an equidigital number, since it uses as much as digits as its factorization.

999999998533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15496819560, while the sum is 91.

The spelling of 999999998533 in words is "nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred thirty-three".