165565200430 has 16 divisors (see below), whose sum is σ = 340591269600. Its totient is φ = 56765211552.

The previous prime is 165565200397. The next prime is 165565200443. The reversal of 165565200430 is 34002565561.

It is a self number, because there is not a number n which added to its sum of digits gives 165565200430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1182608505 + ... + 1182608644.

It is an arithmetic number, because the mean of its divisors is an integer number (21286954350).

Almost surely, 2^165565200430 is an apocalyptic number.

165565200430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165565200430 is an abundant number, since it is smaller than the sum of its proper divisors (175026069170).

165565200430 is a wasteful number, since it uses less digits than its factorization.

165565200430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365217163.

The product of its (nonzero) digits is 108000, while the sum is 37.

Adding to 165565200430 its reverse (34002565561), we get a palindrome (199567765991).

The spelling of 165565200430 in words is "one hundred sixty-five billion, five hundred sixty-five million, two hundred thousand, four hundred thirty".