2568216788 has 12 divisors (see below), whose sum is σ = 4516965600. Its totient is φ = 1277655192.

The previous prime is 2568216779. The next prime is 2568216797. The reversal of 2568216788 is 8876128652.

It is an interprime number because it is at equal distance from previous prime (2568216779) and next prime (2568216797).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612406 + ... + 1613997.

It is an arithmetic number, because the mean of its divisors is an integer number (376413800).

Almost surely, 2^2568216788 is an apocalyptic number.

It is an amenable number.

2568216788 is a deficient number, since it is larger than the sum of its proper divisors (1948748812).

2568216788 is a wasteful number, since it uses less digits than its factorization.

2568216788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3226606 (or 3226604 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The square root of 2568216788 is about 50677.5767771112. The cubic root of 2568216788 is about 1369.4427890109.

The spelling of 2568216788 in words is "two billion, five hundred sixty-eight million, two hundred sixteen thousand, seven hundred eighty-eight".