165008188944 has 45 divisors (see below), whose sum is σ = 461807393359. Its totient is φ = 55001104800.

The previous prime is 165008188907. The next prime is 165008188963. The reversal of 165008188944 is 449881800561.

It is a happy number.

The square root of 165008188944 is 406212.

It is a perfect power (a square), and thus also a powerful number.

165008188944 is a `hidden beast` number, since 1 + 6 + 500 + 8 + 18 + 89 + 44 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4857619 + ... + 4891469.

Almost surely, 2^165008188944 is an apocalyptic number.

165008188944 is the 406212-nd square number.

It is an amenable number.

165008188944 is an abundant number, since it is smaller than the sum of its proper divisors (296799204415).

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

165008188944 is an frugal number, since it uses more digits than its factorization.

165008188944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67716 (or 33856 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 165008188944 in words is "one hundred sixty-five billion, eight million, one hundred eighty-eight thousand, nine hundred forty-four".