165671106172516 has 12 divisors (see below), whose sum is σ = 331342212345088. Its totient is φ = 71001902645352.

The previous prime is 165671106172493. The next prime is 165671106172589. The reversal of 165671106172516 is 615271601176561.

It is a happy number.

165671106172516 is an admirable 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, 2958412610196 + ... + 2958412610251.

Almost surely, 2^{165671106172516} is an apocalyptic number.

It is an amenable number.

165671106172516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

165671106172516 is a wasteful number, since it uses less digits than its factorization.

165671106172516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916825220458 (or 5916825220456 counting only the distinct ones).

The product of its (nonzero) digits is 3175200, while the sum is 55.

The spelling of 165671106172516 in words is "one hundred sixty-five trillion, six hundred seventy-one billion, one hundred six million, one hundred seventy-two thousand, five hundred sixteen".