243869234443 has 4 divisors (see below), whose sum is σ = 246383350360. Its totient is φ = 241355118528.

The previous prime is 243869234429. The next prime is 243869234447. The reversal of 243869234443 is 344432968342.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344432968342 = 2 ⋅172216484171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243869234443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243869234447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257057813 + ... + 1257058006.

It is an arithmetic number, because the mean of its divisors is an integer number (61595837590).

Almost surely, 2^243869234443 is an apocalyptic number.

243869234443 is a deficient number, since it is larger than the sum of its proper divisors (2514115917).

243869234443 is an equidigital number, since it uses as much as digits as its factorization.

243869234443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514115916.

The product of its digits is 11943936, while the sum is 52.

The spelling of 243869234443 in words is "two hundred forty-three billion, eight hundred sixty-nine million, two hundred thirty-four thousand, four hundred forty-three".