243234533345 has 4 divisors (see below), whose sum is σ = 291881440020. Its totient is φ = 194587626672.

The previous prime is 243234533327. The next prime is 243234533369. The reversal of 243234533345 is 543335432342.

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 137208753889 + 106025779456 = 370417^2 + 325616^2 .

It is a cyclic number.

It is not a de Polignac number, because 243234533345 - 2⁶ = 243234533281 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24323453330 + ... + 24323453339.

It is an arithmetic number, because the mean of its divisors is an integer number (72970360005).

Almost surely, 2^243234533345 is an apocalyptic number.

It is an amenable number.

243234533345 is a deficient number, since it is larger than the sum of its proper divisors (48646906675).

243234533345 is an equidigital number, since it uses as much as digits as its factorization.

243234533345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48646906674.

The product of its digits is 1555200, while the sum is 41.

Adding to 243234533345 its reverse (543335432342), we get a palindrome (786569965687).

The spelling of 243234533345 in words is "two hundred forty-three billion, two hundred thirty-four million, five hundred thirty-three thousand, three hundred forty-five".