165928234840705 has 4 divisors (see below), whose sum is σ = 199113881808852. Its totient is φ = 132742587872560.

The previous prime is 165928234840691. The next prime is 165928234840721. The reversal of 165928234840705 is 507048432829561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122708812914801 + 43219421925904 = 11077401^2 + 6574148^2 .

It is not a de Polignac number, because 165928234840705 - 2²⁵ = 165928201286273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16592823484066 + ... + 16592823484075.

It is an arithmetic number, because the mean of its divisors is an integer number (49778470452213).

It is a 1-persistent number, because it is pandigital, but 2⋅165928234840705 = 331856469681410 is not.

Almost surely, 2^{165928234840705} is an apocalyptic number.

It is an amenable number.

165928234840705 is a deficient number, since it is larger than the sum of its proper divisors (33185646968147).

165928234840705 is an equidigital number, since it uses as much as digits as its factorization.

165928234840705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33185646968146.

The product of its (nonzero) digits is 116121600, while the sum is 64.

The spelling of 165928234840705 in words is "one hundred sixty-five trillion, nine hundred twenty-eight billion, two hundred thirty-four million, eight hundred forty thousand, seven hundred five".