243565404565342 has 4 divisors (see below), whose sum is σ = 365348106848016. Its totient is φ = 121782702282670.

The previous prime is 243565404565291. The next prime is 243565404565387.

It is a happy number.

243565404565342 is nontrivially palindromic in base 10.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 60891351141334 + ... + 60891351141337.

It is an arithmetic number, because the mean of its divisors is an integer number (91337026712004).

Almost surely, 2^{243565404565342} is an apocalyptic number.

243565404565342 is a deficient number, since it is larger than the sum of its proper divisors (121782702282674).

243565404565342 is a wasteful number, since it uses less digits than its factorization.

243565404565342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121782702282673.

The product of its (nonzero) digits is 207360000, while the sum is 58.

The spelling of 243565404565342 in words is "two hundred forty-three trillion, five hundred sixty-five billion, four hundred four million, five hundred sixty-five thousand, three hundred forty-two".