17718706913 has 2 divisors, whose sum is σ = 17718706914. Its totient is φ = 17718706912.

The previous prime is 17718706793. The next prime is 17718706933. The reversal of 17718706913 is 31960781771.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12322776064 + 5395930849 = 111008^2 + 73457^2 .

It is a cyclic number.

It is not a de Polignac number, because 17718706913 - 2¹⁴ = 17718690529 is a prime.

It is not a weakly prime, because it can be changed into another prime (17718706933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8859353456 + 8859353457.

It is an arithmetic number, because the mean of its divisors is an integer number (8859353457).

Almost surely, 2^17718706913 is an apocalyptic number.

It is an amenable number.

17718706913 is a deficient number, since it is larger than the sum of its proper divisors (1).

17718706913 is an equidigital number, since it uses as much as digits as its factorization.

17718706913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 50.

The spelling of 17718706913 in words is "seventeen billion, seven hundred eighteen million, seven hundred six thousand, nine hundred thirteen".