165500052166 has 16 divisors (see below), whose sum is σ = 259208563968. Its totient is φ = 79101781000.

The previous prime is 165500052161. The next prime is 165500052173. The reversal of 165500052166 is 661250005561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165500052161) 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, 1072810 + ... + 1217341.

It is an arithmetic number, because the mean of its divisors is an integer number (16200535248).

Almost surely, 2^165500052166 is an apocalyptic number.

165500052166 is a deficient number, since it is larger than the sum of its proper divisors (93708511802).

165500052166 is a wasteful number, since it uses less digits than its factorization.

165500052166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2291747.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 165500052166 in words is "one hundred sixty-five billion, five hundred million, fifty-two thousand, one hundred sixty-six".