36716387221 has 2 divisors, whose sum is σ = 36716387222. Its totient is φ = 36716387220.

The previous prime is 36716387153. The next prime is 36716387231. The reversal of 36716387221 is 12278361763.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33758550225 + 2957836996 = 183735^2 + 54386^2 .

It is a cyclic number.

It is not a de Polignac number, because 36716387221 - 2²⁹ = 36179516309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36716387231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18358193610 + 18358193611.

It is an arithmetic number, because the mean of its divisors is an integer number (18358193611).

Almost surely, 2^36716387221 is an apocalyptic number.

It is an amenable number.

36716387221 is a deficient number, since it is larger than the sum of its proper divisors (1).

36716387221 is an equidigital number, since it uses as much as digits as its factorization.

36716387221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 46.

The spelling of 36716387221 in words is "thirty-six billion, seven hundred sixteen million, three hundred eighty-seven thousand, two hundred twenty-one".