7665788413 has 2 divisors, whose sum is σ = 7665788414. Its totient is φ = 7665788412.

The previous prime is 7665788371. The next prime is 7665788437. The reversal of 7665788413 is 3148875667.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7069110084 + 596678329 = 84078^2 + 24427^2 .

It is a cyclic number.

It is not a de Polignac number, because 7665788413 - 2¹⁷ = 7665657341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7665788483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832894206 + 3832894207.

It is an arithmetic number, because the mean of its divisors is an integer number (3832894207).

Almost surely, 2^7665788413 is an apocalyptic number.

It is an amenable number.

7665788413 is a deficient number, since it is larger than the sum of its proper divisors (1).

7665788413 is an equidigital number, since it uses as much as digits as its factorization.

7665788413 is an evil number, because the sum of its binary digits is even.

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

The square root of 7665788413 is about 87554.4882516025. The cubic root of 7665788413 is about 1971.7519362497.

The spelling of 7665788413 in words is "seven billion, six hundred sixty-five million, seven hundred eighty-eight thousand, four hundred thirteen".