36668371717 has 2 divisors, whose sum is σ = 36668371718. Its totient is φ = 36668371716.

The previous prime is 36668371711. The next prime is 36668371721. The reversal of 36668371717 is 71717386663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35283489921 + 1384881796 = 187839^2 + 37214^2 .

It is a cyclic number.

It is not a de Polignac number, because 36668371717 - 2²⁷ = 36534153989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36668371711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18334185858 + 18334185859.

It is an arithmetic number, because the mean of its divisors is an integer number (18334185859).

Almost surely, 2^36668371717 is an apocalyptic number.

It is an amenable number.

36668371717 is a deficient number, since it is larger than the sum of its proper divisors (1).

36668371717 is an equidigital number, since it uses as much as digits as its factorization.

36668371717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5334336, while the sum is 55.

The spelling of 36668371717 in words is "thirty-six billion, six hundred sixty-eight million, three hundred seventy-one thousand, seven hundred seventeen".