165530086775 has 6 divisors (see below), whose sum is σ = 205257307632. Its totient is φ = 132424069400.

The previous prime is 165530086717. The next prime is 165530086823. The reversal of 165530086775 is 577680035561.

It is a happy number.

It is not a de Polignac number, because 165530086775 - 2¹⁰ = 165530085751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3310601711 + ... + 3310601760.

It is an arithmetic number, because the mean of its divisors is an integer number (34209551272).

Almost surely, 2^165530086775 is an apocalyptic number.

165530086775 is a deficient number, since it is larger than the sum of its proper divisors (39727220857).

165530086775 is an equidigital number, since it uses as much as digits as its factorization.

165530086775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6621203481 (or 6621203476 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 165530086775 in words is "one hundred sixty-five billion, five hundred thirty million, eighty-six thousand, seven hundred seventy-five".