36656609989 has 2 divisors, whose sum is σ = 36656609990. Its totient is φ = 36656609988.

The previous prime is 36656609963. The next prime is 36656609999. The reversal of 36656609989 is 98990665663.

36656609989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24631733025 + 12024876964 = 156945^2 + 109658^2 .

It is an emirp because it is prime and its reverse (98990665663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36656609989 - 2⁷ = 36656609861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36656609999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18328304994 + 18328304995.

It is an arithmetic number, because the mean of its divisors is an integer number (18328304995).

Almost surely, 2^36656609989 is an apocalyptic number.

It is an amenable number.

36656609989 is a deficient number, since it is larger than the sum of its proper divisors (1).

36656609989 is an equidigital number, since it uses as much as digits as its factorization.

36656609989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113374080, while the sum is 67.

The spelling of 36656609989 in words is "thirty-six billion, six hundred fifty-six million, six hundred nine thousand, nine hundred eighty-nine".