170166975169 has 9 divisors (see below), whose sum is σ = 174906070857. Its totient is φ = 165553017264.

The previous prime is 170166975163. The next prime is 170166975179. The reversal of 170166975169 is 961579661071.

The square root of 170166975169 is 412513.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10736068225 + 159430906944 = 103615^2 + 399288^2 .

It is not a de Polignac number, because 170166975169 - 2⁵ = 170166975137 is a prime.

It is a super-2 number, since 2×170166975169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170166975163) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15257407 + ... + 15268555.

It is an arithmetic number, because the mean of its divisors is an integer number (19434007873).

Almost surely, 2^170166975169 is an apocalyptic number.

170166975169 is the 412513-rd square number.

170166975169 is the 206257-th centered octagonal number.

It is an amenable number.

170166975169 is a deficient number, since it is larger than the sum of its proper divisors (4739095688).

170166975169 is an frugal number, since it uses more digits than its factorization.

170166975169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22372 (or 11186 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 58.

The spelling of 170166975169 in words is "one hundred seventy billion, one hundred sixty-six million, nine hundred seventy-five thousand, one hundred sixty-nine".