999966000996593 has 2 divisors, whose sum is σ = 999966000996594. Its totient is φ = 999966000996592.

The previous prime is 999966000996559. The next prime is 999966000996649. The reversal of 999966000996593 is 395699000669999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 886582008127729 + 113383992868864 = 29775527^2 + 10648192^2 .

It is a cyclic number.

It is not a de Polignac number, because 999966000996593 - 2¹⁶ = 999966000931057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999966000996499 and 999966000996508.

It is not a weakly prime, because it can be changed into another prime (999966000996553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499983000498296 + 499983000498297.

It is an arithmetic number, because the mean of its divisors is an integer number (499983000498297).

Almost surely, 2^{999966000996593} is an apocalyptic number.

It is an amenable number.

999966000996593 is a deficient number, since it is larger than the sum of its proper divisors (1).

999966000996593 is an equidigital number, since it uses as much as digits as its factorization.

999966000996593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15496819560, while the sum is 89.

The spelling of 999966000996593 in words is "nine hundred ninety-nine trillion, nine hundred sixty-six billion, nine hundred ninety-six thousand, five hundred ninety-three".