243365465641 has 4 divisors (see below), whose sum is σ = 244409952852. Its totient is φ = 242320978432.

The previous prime is 243365465627. The next prime is 243365465663. The reversal of 243365465641 is 146564563342.

243365465641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 22626176400 + 220739289241 = 150420^2 + 469829^2 .

It is a cyclic number.

It is not a de Polignac number, because 243365465641 - 2⁷ = 243365465513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243365465041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522243256 + ... + 522243721.

It is an arithmetic number, because the mean of its divisors is an integer number (61102488213).

Almost surely, 2^243365465641 is an apocalyptic number.

It is an amenable number.

243365465641 is a deficient number, since it is larger than the sum of its proper divisors (1044487211).

243365465641 is a wasteful number, since it uses less digits than its factorization.

243365465641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044487210.

The product of its digits is 6220800, while the sum is 49.

The spelling of 243365465641 in words is "two hundred forty-three billion, three hundred sixty-five million, four hundred sixty-five thousand, six hundred forty-one".