338161406609 has 4 divisors (see below), whose sum is σ = 364173822516. Its totient is φ = 312148990704.

The previous prime is 338161406581. The next prime is 338161406651. The reversal of 338161406609 is 906604161833.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110396707600 + 227764699009 = 332260^2 + 477247^2 .

It is a cyclic number.

It is not a de Polignac number, because 338161406609 - 2²⁴ = 338144629393 is a prime.

It is a super-2 number, since 2×338161406609² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338361406609) 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, 13006207934 + ... + 13006207959.

It is an arithmetic number, because the mean of its divisors is an integer number (91043455629).

Almost surely, 2^338161406609 is an apocalyptic number.

It is an amenable number.

338161406609 is a deficient number, since it is larger than the sum of its proper divisors (26012415907).

338161406609 is a wasteful number, since it uses less digits than its factorization.

338161406609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26012415906.

The product of its (nonzero) digits is 559872, while the sum is 47.

The spelling of 338161406609 in words is "three hundred thirty-eight billion, one hundred sixty-one million, four hundred six thousand, six hundred nine".