7688763889 has 2 divisors, whose sum is σ = 7688763890. Its totient is φ = 7688763888.

The previous prime is 7688763857. The next prime is 7688763911. The reversal of 7688763889 is 9883678867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5366295025 + 2322468864 = 73255^2 + 48192^2 .

It is a cyclic number.

It is not a de Polignac number, because 7688763889 - 2⁵ = 7688763857 is a prime.

It is not a weakly prime, because it can be changed into another prime (7688763389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3844381944 + 3844381945.

It is an arithmetic number, because the mean of its divisors is an integer number (3844381945).

Almost surely, 2^7688763889 is an apocalyptic number.

It is an amenable number.

7688763889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7688763889 is an equidigital number, since it uses as much as digits as its factorization.

7688763889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 195084288, while the sum is 70.

The square root of 7688763889 is about 87685.5968161248. The cubic root of 7688763889 is about 1973.7198467128.

The spelling of 7688763889 in words is "seven billion, six hundred eighty-eight million, seven hundred sixty-three thousand, eight hundred eighty-nine".