243444342459 has 16 divisors (see below), whose sum is σ = 325819775232. Its totient is φ = 161682976608.

The previous prime is 243444342437. The next prime is 243444342509. The reversal of 243444342459 is 954243444342.

It is not a de Polignac number, because 243444342459 - 2¹¹ = 243444340411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243444342409) 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, 2414434 + ... + 2513240.

It is an arithmetic number, because the mean of its divisors is an integer number (20363735952).

Almost surely, 2^243444342459 is an apocalyptic number.

243444342459 is a deficient number, since it is larger than the sum of its proper divisors (82375432773).

243444342459 is a wasteful number, since it uses less digits than its factorization.

243444342459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101906.

The product of its digits is 6635520, while the sum is 48.

It can be divided in two parts, 243444 and 342459, that added together give a triangular number (585903 = T₁₀₈₂).

The spelling of 243444342459 in words is "two hundred forty-three billion, four hundred forty-four million, three hundred forty-two thousand, four hundred fifty-nine".