243113522004 has 72 divisors (see below), whose sum is σ = 650777498280. Its totient is φ = 76260206592.

The previous prime is 243113521979. The next prime is 243113522011. The reversal of 243113522004 is 400225311342.

243113522004 is a `hidden beast` number, since 2 + 431 + 1 + 3 + 5 + 220 + 0 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 53313886404 + 189799635600 = 230898^2 + 435660^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5110392 + ... + 5157744.

It is an arithmetic number, because the mean of its divisors is an integer number (9038576365).

Almost surely, 2^243113522004 is an apocalyptic number.

It is an amenable number.

243113522004 is an abundant number, since it is smaller than the sum of its proper divisors (407663976276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243113522004 is a wasteful number, since it uses less digits than its factorization.

243113522004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55769 (or 55764 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 243113522004 its reverse (400225311342), we get a palindrome (643338833346).

The spelling of 243113522004 in words is "two hundred forty-three billion, one hundred thirteen million, five hundred twenty-two thousand, four".