2568978331 has 2 divisors, whose sum is σ = 2568978332. Its totient is φ = 2568978330.

The previous prime is 2568978299. The next prime is 2568978359. The reversal of 2568978331 is 1338798652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2568978331 - 2⁵ = 2568978299 is a prime.

It is a super-2 number, since 2×2568978331² = 13199299330295091122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2568978131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284489165 + 1284489166.

It is an arithmetic number, because the mean of its divisors is an integer number (1284489166).

Almost surely, 2^2568978331 is an apocalyptic number.

2568978331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568978331 is an equidigital number, since it uses as much as digits as its factorization.

2568978331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 2568978331 is about 50685.0898292585. The cubic root of 2568978331 is about 1369.5781340890.

The spelling of 2568978331 in words is "two billion, five hundred sixty-eight million, nine hundred seventy-eight thousand, three hundred thirty-one".