165335784338 has 32 divisors (see below), whose sum is σ = 259498805760. Its totient is φ = 78913296000.

The previous prime is 165335784337. The next prime is 165335784373. The reversal of 165335784338 is 833487533561.

It is not an unprimeable number, because it can be changed into a prime (165335784337) 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 15 ways as a sum of consecutive naturals, for example, 2287493 + ... + 2358663.

It is an arithmetic number, because the mean of its divisors is an integer number (8109337680).

Almost surely, 2^165335784338 is an apocalyptic number.

165335784338 is a deficient number, since it is larger than the sum of its proper divisors (94163021422).

165335784338 is a wasteful number, since it uses less digits than its factorization.

165335784338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71714.

The product of its digits is 21772800, while the sum is 56.

The spelling of 165335784338 in words is "one hundred sixty-five billion, three hundred thirty-five million, seven hundred eighty-four thousand, three hundred thirty-eight".