2568978299 has 2 divisors, whose sum is σ = 2568978300. Its totient is φ = 2568978298.

The previous prime is 2568978241. The next prime is 2568978331. The reversal of 2568978299 is 9928798652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2568978299 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2568978229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284489149 + 1284489150.

It is an arithmetic number, because the mean of its divisors is an integer number (1284489150).

Almost surely, 2^2568978299 is an apocalyptic number.

2568978299 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568978299 is an equidigital number, since it uses as much as digits as its factorization.

2568978299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 65.

The square root of 2568978299 is about 50685.0895135838. The cubic root of 2568978299 is about 1369.5781284024.

The spelling of 2568978299 in words is "two billion, five hundred sixty-eight million, nine hundred seventy-eight thousand, two hundred ninety-nine".