165571217015008 has 48 divisors (see below), whose sum is σ = 394449075838944. Its totient is φ = 66785028710400.

The previous prime is 165571217014999. The next prime is 165571217015081. The reversal of 165571217015008 is 800510712175561.

It is a congruent 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, 21739914393 + ... + 21739922008.

It is an arithmetic number, because the mean of its divisors is an integer number (8217689079978).

Almost surely, 2^{165571217015008} is an apocalyptic number.

It is an amenable number.

165571217015008 is an abundant number, since it is smaller than the sum of its proper divisors (228877858823936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165571217015008 is a wasteful number, since it uses less digits than its factorization.

165571217015008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43479836435 (or 43479836427 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 49.

The spelling of 165571217015008 in words is "one hundred sixty-five trillion, five hundred seventy-one billion, two hundred seventeen million, fifteen thousand, eight".