36318645817 has 2 divisors, whose sum is σ = 36318645818. Its totient is φ = 36318645816.

The previous prime is 36318645809. The next prime is 36318645887. The reversal of 36318645817 is 71854681363.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35395154496 + 923491321 = 188136^2 + 30389^2 .

It is a cyclic number.

It is not a de Polignac number, because 36318645817 - 2³ = 36318645809 is a prime.

It is not a weakly prime, because it can be changed into another prime (36318645887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18159322908 + 18159322909.

It is an arithmetic number, because the mean of its divisors is an integer number (18159322909).

Almost surely, 2^36318645817 is an apocalyptic number.

It is an amenable number.

36318645817 is a deficient number, since it is larger than the sum of its proper divisors (1).

36318645817 is an equidigital number, since it uses as much as digits as its factorization.

36318645817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The spelling of 36318645817 in words is "thirty-six billion, three hundred eighteen million, six hundred forty-five thousand, eight hundred seventeen".