2568895978 has 16 divisors (see below), whose sum is σ = 4205688480. Its totient is φ = 1167113200.

The previous prime is 2568895963. The next prime is 2568896017. The reversal of 2568895978 is 8795988652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19833 + ... + 74371.

It is an arithmetic number, because the mean of its divisors is an integer number (262855530).

Almost surely, 2^2568895978 is an apocalyptic number.

2568895978 is a deficient number, since it is larger than the sum of its proper divisors (1636792502).

2568895978 is a wasteful number, since it uses less digits than its factorization.

2568895978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56693.

The product of its digits is 87091200, while the sum is 67.

The square root of 2568895978 is about 50684.2774240691. The cubic root of 2568895978 is about 1369.5634992084.

The spelling of 2568895978 in words is "two billion, five hundred sixty-eight million, eight hundred ninety-five thousand, nine hundred seventy-eight".