153168128689 has 3 divisors (see below), whose sum is σ = 153168520057. Its totient is φ = 153167737322.

The previous prime is 153168128651. The next prime is 153168128693. The reversal of 153168128689 is 986821861351.

It is a happy number.

The square root of 153168128689 is 391367.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 153168128689 - 2⁹ = 153168128177 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153168128699) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 195684 + ... + 587050.

Almost surely, 2^153168128689 is an apocalyptic number.

153168128689 is the 391367-th square number.

153168128689 is the 195684-th centered octagonal number.

It is an amenable number.

153168128689 is a deficient number, since it is larger than the sum of its proper divisors (391368).

153168128689 is an frugal number, since it uses more digits than its factorization.

153168128689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782734 (or 391367 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 58.

The spelling of 153168128689 in words is "one hundred fifty-three billion, one hundred sixty-eight million, one hundred twenty-eight thousand, six hundred eighty-nine".