243663404366342 has 4 divisors (see below), whose sum is σ = 365495106549516. Its totient is φ = 121831702183170.

The previous prime is 243663404366267. The next prime is 243663404366357.

243663404366342 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60915851091584 + ... + 60915851091587.

It is an arithmetic number, because the mean of its divisors is an integer number (91373776637379).

Almost surely, 2^{243663404366342} is an apocalyptic number.

243663404366342 is a deficient number, since it is larger than the sum of its proper divisors (121831702183174).

243663404366342 is a wasteful number, since it uses less digits than its factorization.

243663404366342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121831702183173.

The product of its (nonzero) digits is 107495424, while the sum is 56.

The spelling of 243663404366342 in words is "two hundred forty-three trillion, six hundred sixty-three billion, four hundred four million, three hundred sixty-six thousand, three hundred forty-two".