36318645809 has 2 divisors, whose sum is σ = 36318645810. Its totient is φ = 36318645808.

The previous prime is 36318645773. The next prime is 36318645817. The reversal of 36318645809 is 90854681363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31294671409 + 5023974400 = 176903^2 + 70880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36318645809 is a prime.

It is not a weakly prime, because it can be changed into another prime (36318645109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18159322904 + 18159322905.

It is an arithmetic number, because the mean of its divisors is an integer number (18159322905).

Almost surely, 2^36318645809 is an apocalyptic number.

It is an amenable number.

36318645809 is a deficient number, since it is larger than the sum of its proper divisors (1).

36318645809 is an equidigital number, since it uses as much as digits as its factorization.

36318645809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 36318645809 in words is "thirty-six billion, three hundred eighteen million, six hundred forty-five thousand, eight hundred nine".