165836381822 has 4 divisors (see below), whose sum is σ = 248754572736. Its totient is φ = 82918190910.

The previous prime is 165836381819. The next prime is 165836381827. The reversal of 165836381822 is 228183638561.

165836381822 is digitally balanced in base 3, 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.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165836381827) 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 as a sum of consecutive naturals, namely, 41459095454 + ... + 41459095457.

It is an arithmetic number, because the mean of its divisors is an integer number (62188643184).

Almost surely, 2^165836381822 is an apocalyptic number.

165836381822 is a deficient number, since it is larger than the sum of its proper divisors (82918190914).

165836381822 is an equidigital number, since it uses as much as digits as its factorization.

165836381822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82918190913.

The product of its digits is 3317760, while the sum is 53.

The spelling of 165836381822 in words is "one hundred sixty-five billion, eight hundred thirty-six million, three hundred eighty-one thousand, eight hundred twenty-two".