165530341523 has 8 divisors (see below), whose sum is σ = 172767059136. Its totient is φ = 158445976000.

The previous prime is 165530341511. The next prime is 165530341553. The reversal of 165530341523 is 325143035561.

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

It is not a de Polignac number, because 165530341523 - 2¹⁴ = 165530325139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165530341553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38085803 + ... + 38090148.

It is an arithmetic number, because the mean of its divisors is an integer number (21595882392).

Almost surely, 2^165530341523 is an apocalyptic number.

165530341523 is a deficient number, since it is larger than the sum of its proper divisors (7236717613).

165530341523 is an equidigital number, since it uses as much as digits as its factorization.

165530341523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76176045.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 165530341523 in words is "one hundred sixty-five billion, five hundred thirty million, three hundred forty-one thousand, five hundred twenty-three".