12543354120 has 128 divisors (see below), whose sum is σ = 43465818240. Its totient is φ = 2861936640.

The previous prime is 12543354077. The next prime is 12543354121. The reversal of 12543354120 is 2145334521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (12543354121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257047 + ... + 301926.

It is an arithmetic number, because the mean of its divisors is an integer number (339576705).

Almost surely, 2^12543354120 is an apocalyptic number.

12543354120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12543354120 is an abundant number, since it is smaller than the sum of its proper divisors (30922464120).

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

12543354120 is a wasteful number, since it uses less digits than its factorization.

12543354120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559015 (or 559011 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 12543354120 its reverse (2145334521), we get a palindrome (14688688641).

It can be divided in two parts, 12543 and 354120, that added together give a palindrome (366663).

The spelling of 12543354120 in words is "twelve billion, five hundred forty-three million, three hundred fifty-four thousand, one hundred twenty".