2561713412668 has 24 divisors (see below), whose sum is σ = 4502485814400. Its totient is φ = 1275300412848.

The previous prime is 2561713412653. The next prime is 2561713412677. The reversal of 2561713412668 is 8662143171652.

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 7 ways as a sum of consecutive naturals, for example, 549448 + ... + 2329231.

It is an arithmetic number, because the mean of its divisors is an integer number (187603575600).

Almost surely, 2^{2561713412668} is an apocalyptic number.

It is an amenable number.

2561713412668 is a deficient number, since it is larger than the sum of its proper divisors (1940772401732).

2561713412668 is a wasteful number, since it uses less digits than its factorization.

2561713412668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2879649 (or 2879647 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 52.

The spelling of 2561713412668 in words is "two trillion, five hundred sixty-one billion, seven hundred thirteen million, four hundred twelve thousand, six hundred sixty-eight".