172066515716659 has 2 divisors, whose sum is σ = 172066515716660. Its totient is φ = 172066515716658.

The previous prime is 172066515716651. The next prime is 172066515716707. The reversal of 172066515716659 is 956617515660271.

172066515716659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172066515716659 - 2³ = 172066515716651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172066515716594 and 172066515716603.

It is not a weakly prime, because it can be changed into another prime (172066515716651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86033257858329 + 86033257858330.

It is an arithmetic number, because the mean of its divisors is an integer number (86033257858330).

Almost surely, 2^{172066515716659} is an apocalyptic number.

172066515716659 is a deficient number, since it is larger than the sum of its proper divisors (1).

172066515716659 is an equidigital number, since it uses as much as digits as its factorization.

172066515716659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884000, while the sum is 67.

The spelling of 172066515716659 in words is "one hundred seventy-two trillion, sixty-six billion, five hundred fifteen million, seven hundred sixteen thousand, six hundred fifty-nine".