7768867409 has 2 divisors, whose sum is σ = 7768867410. Its totient is φ = 7768867408.

The previous prime is 7768867373. The next prime is 7768867439. The reversal of 7768867409 is 9047688677.

7768867409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7046763025 + 722104384 = 83945^2 + 26872^2 .

It is a cyclic number.

It is not a de Polignac number, because 7768867409 - 2⁸ = 7768867153 is a prime.

It is not a weakly prime, because it can be changed into another prime (7768867439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3884433704 + 3884433705.

It is an arithmetic number, because the mean of its divisors is an integer number (3884433705).

Almost surely, 2^7768867409 is an apocalyptic number.

It is an amenable number.

7768867409 is a deficient number, since it is larger than the sum of its proper divisors (1).

7768867409 is an equidigital number, since it uses as much as digits as its factorization.

7768867409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28449792, while the sum is 62.

The square root of 7768867409 is about 88141.1788496160. The cubic root of 7768867409 is about 1980.5504208102.

The spelling of 7768867409 in words is "seven billion, seven hundred sixty-eight million, eight hundred sixty-seven thousand, four hundred nine".