999996611399 has 2 divisors, whose sum is σ = 999996611400. Its totient is φ = 999996611398.

The previous prime is 999996611371. The next prime is 999996611401. The reversal of 999996611399 is 993116699999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999996611399 - 2⁸ = 999996611143 is a prime.

Together with 999996611401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999996610399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998305699 + 499998305700.

It is an arithmetic number, because the mean of its divisors is an integer number (499998305700).

Almost surely, 2^999996611399 is an apocalyptic number.

999996611399 is a deficient number, since it is larger than the sum of its proper divisors (1).

999996611399 is an equidigital number, since it uses as much as digits as its factorization.

999996611399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516560652, while the sum is 80.

The spelling of 999996611399 in words is "nine hundred ninety-nine billion, nine hundred ninety-six million, six hundred eleven thousand, three hundred ninety-nine".