2568716516 has 12 divisors (see below), whose sum is σ = 4518546732. Its totient is φ = 1277703168.

The previous prime is 2568716509. The next prime is 2568716531. The reversal of 2568716516 is 6156178652.

It can be written as a sum of positive squares in 2 ways, for example, as 447745600 + 2120970916 = 21160^2 + 46054^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662905 + ... + 1664448.

It is an arithmetic number, because the mean of its divisors is an integer number (376545561).

Almost surely, 2^2568716516 is an apocalyptic number.

It is an amenable number.

2568716516 is a deficient number, since it is larger than the sum of its proper divisors (1949830216).

2568716516 is a wasteful number, since it uses less digits than its factorization.

2568716516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327550 (or 3327548 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 2568716516 is about 50682.5070019233. The cubic root of 2568716516 is about 1369.5316060877.

The spelling of 2568716516 in words is "two billion, five hundred sixty-eight million, seven hundred sixteen thousand, five hundred sixteen".