170663886157 has 2 divisors, whose sum is σ = 170663886158. Its totient is φ = 170663886156.

The previous prime is 170663886097. The next prime is 170663886229. The reversal of 170663886157 is 751688366071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96535111401 + 74128774756 = 310701^2 + 272266^2 .

It is an emirp because it is prime and its reverse (751688366071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 170663886157 - 2²⁷ = 170529668429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170663886457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85331943078 + 85331943079.

It is an arithmetic number, because the mean of its divisors is an integer number (85331943079).

Almost surely, 2^170663886157 is an apocalyptic number.

It is an amenable number.

170663886157 is a deficient number, since it is larger than the sum of its proper divisors (1).

170663886157 is an equidigital number, since it uses as much as digits as its factorization.

170663886157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 170663886157 in words is "one hundred seventy billion, six hundred sixty-three million, eight hundred eighty-six thousand, one hundred fifty-seven".