18966528017 has 2 divisors, whose sum is σ = 18966528018. Its totient is φ = 18966528016.

The previous prime is 18966527971. The next prime is 18966528037. The reversal of 18966528017 is 71082566981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10915234576 + 8051293441 = 104476^2 + 89729^2 .

It is a cyclic number.

It is not a de Polignac number, because 18966528017 - 2⁸ = 18966527761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18966528017.

It is not a weakly prime, because it can be changed into another prime (18966528037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9483264008 + 9483264009.

It is an arithmetic number, because the mean of its divisors is an integer number (9483264009).

Almost surely, 2^18966528017 is an apocalyptic number.

It is an amenable number.

18966528017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18966528017 is an equidigital number, since it uses as much as digits as its factorization.

18966528017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 18966528017 in words is "eighteen billion, nine hundred sixty-six million, five hundred twenty-eight thousand, seventeen".