243203240445 has 32 divisors (see below), whose sum is σ = 426722770944. Its totient is φ = 117299342400.

The previous prime is 243203240429. The next prime is 243203240477. The reversal of 243203240445 is 544042302342.

243203240445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243203240445 - 2⁴ = 243203240429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3827017 + ... + 3890046.

It is an arithmetic number, because the mean of its divisors is an integer number (13335086592).

Almost surely, 2^243203240445 is an apocalyptic number.

It is an amenable number.

243203240445 is a deficient number, since it is larger than the sum of its proper divisors (183519530499).

243203240445 is a wasteful number, since it uses less digits than its factorization.

243203240445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717273.

The product of its (nonzero) digits is 92160, while the sum is 33.

Adding to 243203240445 its reverse (544042302342), we get a palindrome (787245542787).

The spelling of 243203240445 in words is "two hundred forty-three billion, two hundred three million, two hundred forty thousand, four hundred forty-five".