165728928175 has 24 divisors (see below), whose sum is σ = 209033444912. Its totient is φ = 130309344000.

The previous prime is 165728928137. The next prime is 165728928217. The reversal of 165728928175 is 571829827561.

It is not a de Polignac number, because 165728928175 - 2⁷ = 165728928047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1973392 + ... + 2055658.

Almost surely, 2^165728928175 is an apocalyptic number.

165728928175 is a deficient number, since it is larger than the sum of its proper divisors (43304516737).

165728928175 is a wasteful number, since it uses less digits than its factorization.

165728928175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83659 (or 83654 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 61.

The spelling of 165728928175 in words is "one hundred sixty-five billion, seven hundred twenty-eight million, nine hundred twenty-eight thousand, one hundred seventy-five".