243224465204513 has 4 divisors (see below), whose sum is σ = 261934039451028. Its totient is φ = 224514890958000.

The previous prime is 243224465204471. The next prime is 243224465204543. The reversal of 243224465204513 is 315402564422342.

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 44302974978304 + 198921490226209 = 6656048^2 + 14103953^2 .

It is a cyclic number.

It is not a de Polignac number, because 243224465204513 - 2¹² = 243224465200417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243224465204543) 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, 9354787123238 + ... + 9354787123263.

It is an arithmetic number, because the mean of its divisors is an integer number (65483509862757).

Almost surely, 2^{243224465204513} is an apocalyptic number.

It is an amenable number.

243224465204513 is a deficient number, since it is larger than the sum of its proper divisors (18709574246515).

243224465204513 is a wasteful number, since it uses less digits than its factorization.

243224465204513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18709574246514.

The product of its (nonzero) digits is 5529600, while the sum is 47.

The spelling of 243224465204513 in words is "two hundred forty-three trillion, two hundred twenty-four billion, four hundred sixty-five million, two hundred four thousand, five hundred thirteen".