165532149144 has 48 divisors (see below), whose sum is σ = 471911832600. Its totient is φ = 52273309824.

The previous prime is 165532149059. The next prime is 165532149179. The reversal of 165532149144 is 441941235561.

165532149144 is a `hidden beast` number, since 1 + 6 + 553 + 2 + 1 + 4 + 91 + 4 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 165532149144.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60500149 + ... + 60502884.

Almost surely, 2^165532149144 is an apocalyptic number.

It is an amenable number.

165532149144 is an abundant number, since it is smaller than the sum of its proper divisors (306379683456).

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

165532149144 is a wasteful number, since it uses less digits than its factorization.

165532149144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121003064 (or 121003057 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The spelling of 165532149144 in words is "one hundred sixty-five billion, five hundred thirty-two million, one hundred forty-nine thousand, one hundred forty-four".