165648666835 has 8 divisors (see below), whose sum is σ = 199485798336. Its totient is φ = 132047334720.

The previous prime is 165648666769. The next prime is 165648666851. The reversal of 165648666835 is 538666846561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 165648666835 - 2¹¹ = 165648664787 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 58948299 + ... + 58951108.

It is an arithmetic number, because the mean of its divisors is an integer number (24935724792).

Almost surely, 2^165648666835 is an apocalyptic number.

165648666835 is a deficient number, since it is larger than the sum of its proper divisors (33837131501).

165648666835 is a wasteful number, since it uses less digits than its factorization.

165648666835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117899693.

The product of its digits is 149299200, while the sum is 64.

The spelling of 165648666835 in words is "one hundred sixty-five billion, six hundred forty-eight million, six hundred sixty-six thousand, eight hundred thirty-five".