243742164365 has 16 divisors (see below), whose sum is σ = 341096908800. Its totient is φ = 167137482960.

The previous prime is 243742164349. The next prime is 243742164377. The reversal of 243742164365 is 563461247342.

It is not a de Polignac number, because 243742164365 - 2⁴ = 243742164349 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71060141 + ... + 71063570.

It is an arithmetic number, because the mean of its divisors is an integer number (21318556800).

Almost surely, 2^243742164365 is an apocalyptic number.

It is an amenable number.

243742164365 is a deficient number, since it is larger than the sum of its proper divisors (97354744435).

243742164365 is an equidigital number, since it uses as much as digits as its factorization.

243742164365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142123737 (or 142123723 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 47.

The spelling of 243742164365 in words is "two hundred forty-three billion, seven hundred forty-two million, one hundred sixty-four thousand, three hundred sixty-five".