999998811179 has 2 divisors, whose sum is σ = 999998811180. Its totient is φ = 999998811178.

The previous prime is 999998811169. The next prime is 999998811191. The reversal of 999998811179 is 971118899999.

999998811179 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999998811179 is a prime.

It is not a weakly prime, because it can be changed into another prime (999998811169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999405589 + 499999405590.

It is an arithmetic number, because the mean of its divisors is an integer number (499999405590).

Almost surely, 2^999998811179 is an apocalyptic number.

999998811179 is a deficient number, since it is larger than the sum of its proper divisors (1).

999998811179 is an equidigital number, since it uses as much as digits as its factorization.

999998811179 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238085568, while the sum is 80.

The spelling of 999998811179 in words is "nine hundred ninety-nine billion, nine hundred ninety-eight million, eight hundred eleven thousand, one hundred seventy-nine".