243504323345 has 16 divisors (see below), whose sum is σ = 302779330560. Its totient is φ = 187776168384.

The previous prime is 243504323329. The next prime is 243504323351. The reversal of 243504323345 is 543323405342.

It is a cyclic number.

It is not a de Polignac number, because 243504323345 - 2⁴ = 243504323329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243504323299 and 243504323308.

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, 1295297 + ... + 1471326.

It is an arithmetic number, because the mean of its divisors is an integer number (18923708160).

Almost surely, 2^243504323345 is an apocalyptic number.

It is an amenable number.

243504323345 is a deficient number, since it is larger than the sum of its proper divisors (59275007215).

243504323345 is a wasteful number, since it uses less digits than its factorization.

243504323345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767264.

The product of its (nonzero) digits is 518400, while the sum is 38.

Adding to 243504323345 its reverse (543323405342), we get a palindrome (786827728687).

The spelling of 243504323345 in words is "two hundred forty-three billion, five hundred four million, three hundred twenty-three thousand, three hundred forty-five".