999999999743903 has 2 divisors, whose sum is σ = 999999999743904. Its totient is φ = 999999999743902.

The previous prime is 999999999743893. The next prime is 999999999743971. The reversal of 999999999743903 is 309347999999999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999999999743903 - 2⁴ = 999999999743887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999999999743791 and 999999999743800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999999999713903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999999871951 + 499999999871952.

It is an arithmetic number, because the mean of its divisors is an integer number (499999999871952).

Almost surely, 2^{999999999743903} is an apocalyptic number.

999999999743903 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999999743903 is an equidigital number, since it uses as much as digits as its factorization.

999999999743903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 878669669052, while the sum is 107.

The spelling of 999999999743903 in words is "nine hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, seven hundred forty-three thousand, nine hundred three".