2543567668 has 12 divisors (see below), whose sum is σ = 4501258020. Its totient is φ = 1257493952.

The previous prime is 2543567629. The next prime is 2543567711. The reversal of 2543567668 is 8667653452.

It can be written as a sum of positive squares in 2 ways, for example, as 940526224 + 1603041444 = 30668^2 + 40038^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3572071 + ... + 3572782.

It is an arithmetic number, because the mean of its divisors is an integer number (375104835).

Almost surely, 2^2543567668 is an apocalyptic number.

It is an amenable number.

2543567668 is a deficient number, since it is larger than the sum of its proper divisors (1957690352).

2543567668 is a wasteful number, since it uses less digits than its factorization.

2543567668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7144946 (or 7144944 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 52.

The square root of 2543567668 is about 50433.7948998487. The cubic root of 2543567668 is about 1365.0475043288.

The spelling of 2543567668 in words is "two billion, five hundred forty-three million, five hundred sixty-seven thousand, six hundred sixty-eight".