2560788667 has 2 divisors, whose sum is σ = 2560788668. Its totient is φ = 2560788666.

The previous prime is 2560788661. The next prime is 2560788689. The reversal of 2560788667 is 7668870652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2560788667 - 2⁷ = 2560788539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2560788661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1280394333 + 1280394334.

It is an arithmetic number, because the mean of its divisors is an integer number (1280394334).

Almost surely, 2^2560788667 is an apocalyptic number.

2560788667 is a deficient number, since it is larger than the sum of its proper divisors (1).

2560788667 is an equidigital number, since it uses as much as digits as its factorization.

2560788667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The square root of 2560788667 is about 50604.2356626399. The cubic root of 2560788667 is about 1368.1212222512.

The spelling of 2560788667 in words is "two billion, five hundred sixty million, seven hundred eighty-eight thousand, six hundred sixty-seven".