36660659909 has 2 divisors, whose sum is σ = 36660659910. Its totient is φ = 36660659908.

The previous prime is 36660659899. The next prime is 36660659921. The reversal of 36660659909 is 90995606663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24750211684 + 11910448225 = 157322^2 + 109135^2 .

It is a cyclic number.

It is not a de Polignac number, because 36660659909 - 2⁸ = 36660659653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36660659929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18330329954 + 18330329955.

It is an arithmetic number, because the mean of its divisors is an integer number (18330329955).

Almost surely, 2^36660659909 is an apocalyptic number.

It is an amenable number.

36660659909 is a deficient number, since it is larger than the sum of its proper divisors (1).

36660659909 is an equidigital number, since it uses as much as digits as its factorization.

36660659909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14171760, while the sum is 59.

The spelling of 36660659909 in words is "thirty-six billion, six hundred sixty million, six hundred fifty-nine thousand, nine hundred nine".