36661718057 has 2 divisors, whose sum is σ = 36661718058. Its totient is φ = 36661718056.

The previous prime is 36661717987. The next prime is 36661718083. The reversal of 36661718057 is 75081716663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18338305561 + 18323412496 = 135419^2 + 135364^2 .

It is a cyclic number.

It is not a de Polignac number, because 36661718057 - 2⁸ = 36661717801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36661717996 and 36661718014.

It is not a weakly prime, because it can be changed into another prime (36661718087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18330859028 + 18330859029.

It is an arithmetic number, because the mean of its divisors is an integer number (18330859029).

Almost surely, 2^36661718057 is an apocalyptic number.

It is an amenable number.

36661718057 is a deficient number, since it is larger than the sum of its proper divisors (1).

36661718057 is an equidigital number, since it uses as much as digits as its factorization.

36661718057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 36661718057 in words is "thirty-six billion, six hundred sixty-one million, seven hundred eighteen thousand, fifty-seven".