165213325640144 has 40 divisors (see below), whose sum is σ = 336661116452352. Its totient is φ = 78433593413760.

The previous prime is 165213325640081. The next prime is 165213325640219. The reversal of 165213325640144 is 441046523312561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3142345244 + ... + 3142397819.

Almost surely, 2^{165213325640144} is an apocalyptic number.

It is an amenable number.

165213325640144 is an abundant number, since it is smaller than the sum of its proper divisors (171447790812208).

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

165213325640144 is a wasteful number, since it uses less digits than its factorization.

165213325640144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6284743155 (or 6284743149 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 165213325640144 in words is "one hundred sixty-five trillion, two hundred thirteen billion, three hundred twenty-five million, six hundred forty thousand, one hundred forty-four".