173066816169 has 27 divisors (see below), whose sum is σ = 270719630103. Its totient is φ = 106492671792.

The previous prime is 173066816147. The next prime is 173066816177. The reversal of 173066816169 is 961618660371.

The square root of 173066816169 is 416013.

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

173066816169 is a `hidden beast` number, since 17 + 3 + 0 + 6 + 6 + 8 + 1 + 616 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25601600025 + 147465216144 = 160005^2 + 384012^2 .

It is not a de Polignac number, because 173066816169 - 2¹¹ = 173066814121 is a prime.

It is a super-2 number, since 2×173066816169² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (173066816189) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 16219174 + ... + 16229840.

Almost surely, 2^173066816169 is an apocalyptic number.

173066816169 is the 416013-rd square number.

173066816169 is the 208007-th centered octagonal number.

It is an amenable number.

173066816169 is a deficient number, since it is larger than the sum of its proper divisors (97652813934).

173066816169 is an frugal number, since it uses more digits than its factorization.

173066816169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21366 (or 10683 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 173066816169 in words is "one hundred seventy-three billion, sixty-six million, eight hundred sixteen thousand, one hundred sixty-nine".