17823696664993 has 2 divisors, whose sum is σ = 17823696664994. Its totient is φ = 17823696664992.

The previous prime is 17823696664981. The next prime is 17823696665087. The reversal of 17823696664993 is 39946669632871.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15910708925329 + 1912987739664 = 3988823^2 + 1383108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17823696664993 is a prime.

It is not a weakly prime, because it can be changed into another prime (17823696664933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8911848332496 + 8911848332497.

It is an arithmetic number, because the mean of its divisors is an integer number (8911848332497).

Almost surely, 2^{17823696664993} is an apocalyptic number.

It is an amenable number.

17823696664993 is a deficient number, since it is larger than the sum of its proper divisors (1).

17823696664993 is an equidigital number, since it uses as much as digits as its factorization.

17823696664993 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 17823696664993 in words is "seventeen trillion, eight hundred twenty-three billion, six hundred ninety-six million, six hundred sixty-four thousand, nine hundred ninety-three".