36311606809 has 2 divisors, whose sum is σ = 36311606810. Its totient is φ = 36311606808.

The previous prime is 36311606677. The next prime is 36311606861. The reversal of 36311606809 is 90860611363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33459726400 + 2851880409 = 182920^2 + 53403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36311606809 is a prime.

It is not a weakly prime, because it can be changed into another prime (36311606899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18155803404 + 18155803405.

It is an arithmetic number, because the mean of its divisors is an integer number (18155803405).

Almost surely, 2^36311606809 is an apocalyptic number.

It is an amenable number.

36311606809 is a deficient number, since it is larger than the sum of its proper divisors (1).

36311606809 is an equidigital number, since it uses as much as digits as its factorization.

36311606809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 36311606809 in words is "thirty-six billion, three hundred eleven million, six hundred six thousand, eight hundred nine".