243450204115 has 4 divisors (see below), whose sum is σ = 292140244944. Its totient is φ = 194760163288.

The previous prime is 243450204113. The next prime is 243450204169. The reversal of 243450204115 is 511402054342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243450204115 - 2¹ = 243450204113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243450204113) 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, 24345020407 + ... + 24345020416.

It is an arithmetic number, because the mean of its divisors is an integer number (73035061236).

Almost surely, 2^243450204115 is an apocalyptic number.

243450204115 is a deficient number, since it is larger than the sum of its proper divisors (48690040829).

243450204115 is an equidigital number, since it uses as much as digits as its factorization.

243450204115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48690040828.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 243450204115 its reverse (511402054342), we get a palindrome (754852258457).

The spelling of 243450204115 in words is "two hundred forty-three billion, four hundred fifty million, two hundred four thousand, one hundred fifteen".