165153443415505 has 8 divisors (see below), whose sum is σ = 198184353639552. Its totient is φ = 132122607038448.

The previous prime is 165153443415497. The next prime is 165153443415551. The reversal of 165153443415505 is 505514344351561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 165153443415505 - 2³ = 165153443415497 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13416249 + ... + 22589878.

It is an arithmetic number, because the mean of its divisors is an integer number (24773044204944).

Almost surely, 2^{165153443415505} is an apocalyptic number.

It is an amenable number.

165153443415505 is a deficient number, since it is larger than the sum of its proper divisors (33030910224047).

165153443415505 is an equidigital number, since it uses as much as digits as its factorization.

165153443415505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36923495.

The product of its (nonzero) digits is 10800000, while the sum is 52.

The spelling of 165153443415505 in words is "one hundred sixty-five trillion, one hundred fifty-three billion, four hundred forty-three million, four hundred fifteen thousand, five hundred five".