9990999990743 has 2 divisors, whose sum is σ = 9990999990744. Its totient is φ = 9990999990742.

The previous prime is 9990999990739. The next prime is 9990999990757. The reversal of 9990999990743 is 3470999990999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9990999990743 - 2² = 9990999990739 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9990999990703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4995499995371 + 4995499995372.

It is an arithmetic number, because the mean of its divisors is an integer number (4995499995372).

Almost surely, 2^{9990999990743} is an apocalyptic number.

9990999990743 is a deficient number, since it is larger than the sum of its proper divisors (1).

9990999990743 is an equidigital number, since it uses as much as digits as its factorization.

9990999990743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3615924564, while the sum is 86.

The spelling of 9990999990743 in words is "nine trillion, nine hundred ninety billion, nine hundred ninety-nine million, nine hundred ninety thousand, seven hundred forty-three".