18056670017 has 2 divisors, whose sum is σ = 18056670018. Its totient is φ = 18056670016.

The previous prime is 18056670013. The next prime is 18056670089. The reversal of 18056670017 is 71007665081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9047053456 + 9009616561 = 95116^2 + 94919^2 .

It is an emirp because it is prime and its reverse (71007665081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18056670017 - 2² = 18056670013 is a prime.

It is not a weakly prime, because it can be changed into another prime (18056670013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9028335008 + 9028335009.

It is an arithmetic number, because the mean of its divisors is an integer number (9028335009).

Almost surely, 2^18056670017 is an apocalyptic number.

It is an amenable number.

18056670017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18056670017 is an equidigital number, since it uses as much as digits as its factorization.

18056670017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 18056670017 in words is "eighteen billion, fifty-six million, six hundred seventy thousand, seventeen".