165446171215 has 32 divisors (see below), whose sum is σ = 224322642432. Its totient is φ = 116296128000.

The previous prime is 165446171201. The next prime is 165446171227. The reversal of 165446171215 is 512171644561.

165446171215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 165446171215 - 2⁵ = 165446171183 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 550096 + ... + 795925.

It is an arithmetic number, because the mean of its divisors is an integer number (7010082576).

Almost surely, 2^165446171215 is an apocalyptic number.

165446171215 is a deficient number, since it is larger than the sum of its proper divisors (58876471217).

165446171215 is a wasteful number, since it uses less digits than its factorization.

165446171215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346131.

The product of its digits is 201600, while the sum is 43.

The spelling of 165446171215 in words is "one hundred sixty-five billion, four hundred forty-six million, one hundred seventy-one thousand, two hundred fifteen".