17066645987 has 2 divisors, whose sum is σ = 17066645988. Its totient is φ = 17066645986.

The previous prime is 17066645971. The next prime is 17066646007. The reversal of 17066645987 is 78954666071.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 17066645987 - 2⁴ = 17066645971 is a prime.

It is not a weakly prime, because it can be changed into another prime (17066645917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8533322993 + 8533322994.

It is an arithmetic number, because the mean of its divisors is an integer number (8533322994).

Almost surely, 2^17066645987 is an apocalyptic number.

17066645987 is a deficient number, since it is larger than the sum of its proper divisors (1).

17066645987 is an equidigital number, since it uses as much as digits as its factorization.

17066645987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 59.

The spelling of 17066645987 in words is "seventeen billion, sixty-six million, six hundred forty-five thousand, nine hundred eighty-seven".