999999999744071 has 2 divisors, whose sum is σ = 999999999744072. Its totient is φ = 999999999744070.

The previous prime is 999999999744061. The next prime is 999999999744073. The reversal of 999999999744071 is 170447999999999.

It is a happy number.

999999999744071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999999999744071 - 2¹⁰ = 999999999743047 is a prime.

Together with 999999999744073, 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 (999999999744073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999999872035 + 499999999872036.

It is an arithmetic number, because the mean of its divisors is an integer number (499999999872036).

Almost surely, 2^{999999999744071} is an apocalyptic number.

999999999744071 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999999744071 is an equidigital number, since it uses as much as digits as its factorization.

999999999744071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 303737663376, while the sum is 104.

The spelling of 999999999744071 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, seven hundred forty-four thousand, seventy-one".