2543440564126 has 16 divisors (see below), whose sum is σ = 4756564172160. Its totient is φ = 990950869080.

The previous prime is 2543440564121. The next prime is 2543440564139. The reversal of 2543440564126 is 6214650443452.

2543440564126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543440564121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8257923756 + ... + 8257924063.

It is an arithmetic number, because the mean of its divisors is an integer number (297285260760).

Almost surely, 2^{2543440564126} is an apocalyptic number.

2543440564126 is a deficient number, since it is larger than the sum of its proper divisors (2213123608034).

2543440564126 is a wasteful number, since it uses less digits than its factorization.

2543440564126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16515847839.

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 2543440564126 in words is "two trillion, five hundred forty-three billion, four hundred forty million, five hundred sixty-four thousand, one hundred twenty-six".