999634121073223 has 2 divisors, whose sum is σ = 999634121073224. Its totient is φ = 999634121073222.

The previous prime is 999634121073163. The next prime is 999634121073227. The reversal of 999634121073223 is 322370121436999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999634121073223 - 2²⁹ = 999633584202311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999634121073227) 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, 499817060536611 + 499817060536612.

It is an arithmetic number, because the mean of its divisors is an integer number (499817060536612).

Almost surely, 2^{999634121073223} is an apocalyptic number.

999634121073223 is a deficient number, since it is larger than the sum of its proper divisors (1).

999634121073223 is an equidigital number, since it uses as much as digits as its factorization.

999634121073223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26453952, while the sum is 61.

The spelling of 999634121073223 in words is "nine hundred ninety-nine trillion, six hundred thirty-four billion, one hundred twenty-one million, seventy-three thousand, two hundred twenty-three".