165435084197 has 16 divisors (see below), whose sum is σ = 176711174640. Its totient is φ = 154336508928.

The previous prime is 165435084193. The next prime is 165435084229. The reversal of 165435084197 is 791480534561.

It can be written as a sum of positive squares in 8 ways, for example, as 74114881 + 165360969316 = 8609^2 + 406646^2 .

It is a cyclic number.

It is not a de Polignac number, because 165435084197 - 2² = 165435084193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165435084193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809063 + ... + 992699.

It is an arithmetic number, because the mean of its divisors is an integer number (11044448415).

Almost surely, 2^165435084197 is an apocalyptic number.

165435084197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

165435084197 is a deficient number, since it is larger than the sum of its proper divisors (11276090443).

165435084197 is a wasteful number, since it uses less digits than its factorization.

165435084197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184120.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 165435084197 in words is "one hundred sixty-five billion, four hundred thirty-five million, eighty-four thousand, one hundred ninety-seven".