165298032173 has 2 divisors, whose sum is σ = 165298032174. Its totient is φ = 165298032172.

The previous prime is 165298032167. The next prime is 165298032269. The reversal of 165298032173 is 371230892561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145739170564 + 19558861609 = 381758^2 + 139853^2 .

It is an emirp because it is prime and its reverse (371230892561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165298032173 - 2⁴ = 165298032157 is a prime.

It is a super-2 number, since 2×165298032173² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165298032143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82649016086 + 82649016087.

It is an arithmetic number, because the mean of its divisors is an integer number (82649016087).

Almost surely, 2^165298032173 is an apocalyptic number.

It is an amenable number.

165298032173 is a deficient number, since it is larger than the sum of its proper divisors (1).

165298032173 is an equidigital number, since it uses as much as digits as its factorization.

165298032173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 165298032173 in words is "one hundred sixty-five billion, two hundred ninety-eight million, thirty-two thousand, one hundred seventy-three".