243042334551 has 12 divisors (see below), whose sum is σ = 351112556080. Its totient is φ = 162004497120.

The previous prime is 243042334537. The next prime is 243042334573. The reversal of 243042334551 is 155433240342.

243042334551 is a `hidden beast` number, since 2 + 4 + 30 + 42 + 3 + 34 + 551 = 666.

It is not a de Polignac number, because 243042334551 - 2⁵ = 243042334519 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 (243042334511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1912171 + ... + 2035308.

Almost surely, 2^243042334551 is an apocalyptic number.

243042334551 is a deficient number, since it is larger than the sum of its proper divisors (108070221529).

243042334551 is a wasteful number, since it uses less digits than its factorization.

243042334551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954326 (or 3954323 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 243042334551 its reverse (155433240342), we get a palindrome (398475574893).

The spelling of 243042334551 in words is "two hundred forty-three billion, forty-two million, three hundred thirty-four thousand, five hundred fifty-one".