243775542013 has 16 divisors (see below), whose sum is σ = 246350315520. Its totient is φ = 241215030000.

The previous prime is 243775541983. The next prime is 243775542061. The reversal of 243775542013 is 310245577342.

It is a cyclic number.

It is not a de Polignac number, because 243775542013 - 2¹³ = 243775533821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243775540013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62392606 + ... + 62396512.

It is an arithmetic number, because the mean of its divisors is an integer number (15396894720).

Almost surely, 2^243775542013 is an apocalyptic number.

It is an amenable number.

243775542013 is a deficient number, since it is larger than the sum of its proper divisors (2574773507).

243775542013 is a wasteful number, since it uses less digits than its factorization.

243775542013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5568.

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 243775542013 in words is "two hundred forty-three billion, seven hundred seventy-five million, five hundred forty-two thousand, thirteen".