165737848433 has 4 divisors (see below), whose sum is σ = 170217249780. Its totient is φ = 161258447088.

The previous prime is 165737848387. The next prime is 165737848469. The reversal of 165737848433 is 334848737561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334848737561 = 13 ⋅25757595197.

It can be written as a sum of positive squares in 2 ways, for example, as 108088397824 + 57649450609 = 328768^2 + 240103^2 .

It is a cyclic number.

It is not a de Polignac number, because 165737848433 - 2¹⁶ = 165737782897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165737848333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2239700618 + ... + 2239700691.

It is an arithmetic number, because the mean of its divisors is an integer number (42554312445).

Almost surely, 2^165737848433 is an apocalyptic number.

It is an amenable number.

165737848433 is a deficient number, since it is larger than the sum of its proper divisors (4479401347).

165737848433 is an equidigital number, since it uses as much as digits as its factorization.

165737848433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4479401346.

The product of its digits is 40642560, while the sum is 59.

The spelling of 165737848433 in words is "one hundred sixty-five billion, seven hundred thirty-seven million, eight hundred forty-eight thousand, four hundred thirty-three".