999997995743 has 2 divisors, whose sum is σ = 999997995744. Its totient is φ = 999997995742.

The previous prime is 999997995739. The next prime is 999997995803. The reversal of 999997995743 is 347599799999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999997995743 - 2² = 999997995739 is a prime.

It is a super-2 number, since 2×999997995743² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999997695743) 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, 499998997871 + 499998997872.

It is an arithmetic number, because the mean of its divisors is an integer number (499998997872).

Almost surely, 2^999997995743 is an apocalyptic number.

999997995743 is a deficient number, since it is larger than the sum of its proper divisors (1).

999997995743 is an equidigital number, since it uses as much as digits as its factorization.

999997995743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14061928860, while the sum is 89.

The spelling of 999997995743 in words is "nine hundred ninety-nine billion, nine hundred ninety-seven million, nine hundred ninety-five thousand, seven hundred forty-three".