165728253283 has 4 divisors (see below), whose sum is σ = 166172565328. Its totient is φ = 165283941240.

The previous prime is 165728253203. The next prime is 165728253287. The reversal of 165728253283 is 382352827561.

165728253283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 382352827561 = 41 ⋅9325678721.

It is a cyclic number.

It is not a de Polignac number, because 165728253283 - 2²⁹ = 165191382371 is a prime.

It is a super-3 number, since 3×165728253283³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165728253283.

It is not an unprimeable number, because it can be changed into a prime (165728253287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222155463 + ... + 222156208.

It is an arithmetic number, because the mean of its divisors is an integer number (41543141332).

Almost surely, 2^165728253283 is an apocalyptic number.

165728253283 is a deficient number, since it is larger than the sum of its proper divisors (444312045).

165728253283 is an equidigital number, since it uses as much as digits as its factorization.

165728253283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444312044.

The product of its digits is 4838400, while the sum is 52.

The spelling of 165728253283 in words is "one hundred sixty-five billion, seven hundred twenty-eight million, two hundred fifty-three thousand, two hundred eighty-three".