243534434120 has 64 divisors (see below), whose sum is σ = 550248042240. Its totient is φ = 97006291200.

The previous prime is 243534434089. The next prime is 243534434177. The reversal of 243534434120 is 21434435342.

It is a super-3 number, since 3×243534434120³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13587965 + ... + 13605875.

It is an arithmetic number, because the mean of its divisors is an integer number (8597625660).

Almost surely, 2^243534434120 is an apocalyptic number.

243534434120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243534434120 is an abundant number, since it is smaller than the sum of its proper divisors (306713608120).

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

243534434120 is a wasteful number, since it uses less digits than its factorization.

243534434120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19326 (or 19322 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 35.

Adding to 243534434120 its reverse (21434435342), we get a palindrome (264968869462).

The spelling of 243534434120 in words is "two hundred forty-three billion, five hundred thirty-four million, four hundred thirty-four thousand, one hundred twenty".