243426666431 has 8 divisors (see below), whose sum is σ = 264471723600. Its totient is φ = 222713027712.

The previous prime is 243426666419. The next prime is 243426666467. The reversal of 243426666431 is 134666624342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243426666431 - 2¹⁰ = 243426665407 is a prime.

It is a super-3 number, since 3×243426666431³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243426666401) 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 7 ways as a sum of consecutive naturals, for example, 82853081 + ... + 82856018.

It is an arithmetic number, because the mean of its divisors is an integer number (33058965450).

Almost surely, 2^243426666431 is an apocalyptic number.

243426666431 is a deficient number, since it is larger than the sum of its proper divisors (21045057169).

243426666431 is a wasteful number, since it uses less digits than its factorization.

243426666431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165709225.

The product of its digits is 2985984, while the sum is 47.

The spelling of 243426666431 in words is "two hundred forty-three billion, four hundred twenty-six million, six hundred sixty-six thousand, four hundred thirty-one".