2543443740252 has 18 divisors (see below), whose sum is σ = 6429260565728. Its totient is φ = 847814580072.

The previous prime is 2543443740199. The next prime is 2543443740259. The reversal of 2543443740252 is 2520473443452.

It is a happy number.

2543443740252 is a `hidden beast` number, since 2 + 54 + 344 + 3 + 7 + 4 + 0 + 252 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 2543443740198 and 2543443740207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543443740259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35325607468 + ... + 35325607539.

Almost surely, 2^{2543443740252} is an apocalyptic number.

It is an amenable number.

2543443740252 is an abundant number, since it is smaller than the sum of its proper divisors (3885816825476).

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

2543443740252 is a wasteful number, since it uses less digits than its factorization.

2543443740252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70651215017 (or 70651215012 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 45.

The spelling of 2543443740252 in words is "two trillion, five hundred forty-three billion, four hundred forty-three million, seven hundred forty thousand, two hundred fifty-two".