999961448323723 has 2 divisors, whose sum is σ = 999961448323724. Its totient is φ = 999961448323722.

The previous prime is 999961448323693. The next prime is 999961448323769. The reversal of 999961448323723 is 327323844169999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999961448323723 - 2²¹ = 999961446226571 is a prime.

It is not a weakly prime, because it can be changed into another prime (999961448353723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499980724161861 + 499980724161862.

It is an arithmetic number, because the mean of its divisors is an integer number (499980724161862).

Almost surely, 2^{999961448323723} is an apocalyptic number.

999961448323723 is a deficient number, since it is larger than the sum of its proper divisors (1).

999961448323723 is an equidigital number, since it uses as much as digits as its factorization.

999961448323723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3809369088, while the sum is 79.

The spelling of 999961448323723 in words is "nine hundred ninety-nine trillion, nine hundred sixty-one billion, four hundred forty-eight million, three hundred twenty-three thousand, seven hundred twenty-three".