2543568856 has 8 divisors (see below), whose sum is σ = 4769191620. Its totient is φ = 1271784424.

The previous prime is 2543568851. The next prime is 2543568899. The reversal of 2543568856 is 6588653452.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543568851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158973046 + ... + 158973061.

Almost surely, 2^2543568856 is an apocalyptic number.

It is an amenable number.

2543568856 is a deficient number, since it is larger than the sum of its proper divisors (2225622764).

2543568856 is a wasteful number, since it uses less digits than its factorization.

2543568856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317946113 (or 317946109 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 52.

The square root of 2543568856 is about 50433.8066776641. The cubic root of 2543568856 is about 1365.0477168487.

The spelling of 2543568856 in words is "two billion, five hundred forty-three million, five hundred sixty-eight thousand, eight hundred fifty-six".