999961448353723 has 2 divisors, whose sum is σ = 999961448353724. Its totient is φ = 999961448353722.

The previous prime is 999961448353691. The next prime is 999961448353729. The reversal of 999961448353723 is 327353844169999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999961448353723 - 2⁵ = 999961448353691 is a prime.

It is not a weakly prime, because it can be changed into another prime (999961448353729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499980724176861 + 499980724176862.

It is an arithmetic number, because the mean of its divisors is an integer number (499980724176862).

Almost surely, 2^{999961448353723} is an apocalyptic number.

999961448353723 is a deficient number, since it is larger than the sum of its proper divisors (1).

999961448353723 is an equidigital number, since it uses as much as digits as its factorization.

999961448353723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9523422720, while the sum is 82.

The spelling of 999961448353723 in words is "nine hundred ninety-nine trillion, nine hundred sixty-one billion, four hundred forty-eight million, three hundred fifty-three thousand, seven hundred twenty-three".