243134650065 has 32 divisors (see below), whose sum is σ = 390536015616. Its totient is φ = 129165281280.

The previous prime is 243134650019. The next prime is 243134650069. The reversal of 243134650065 is 560056431342.

It is not a de Polignac number, because 243134650065 - 2¹⁰ = 243134649041 is a prime.

It is a super-2 number, since 2×243134650065² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243134650069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14588217 + ... + 14604873.

It is an arithmetic number, because the mean of its divisors is an integer number (12204250488).

Almost surely, 2^243134650065 is an apocalyptic number.

It is an amenable number.

243134650065 is a deficient number, since it is larger than the sum of its proper divisors (147401365551).

243134650065 is a wasteful number, since it uses less digits than its factorization.

243134650065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20409.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 243134650065 in words is "two hundred forty-three billion, one hundred thirty-four million, six hundred fifty thousand, sixty-five".