7665788713 has 4 divisors (see below), whose sum is σ = 8362678608. Its totient is φ = 6968898820.

The previous prime is 7665788671. The next prime is 7665788729. The reversal of 7665788713 is 3178875667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3178875667 = 11 ⋅288988697.

It is a cyclic number.

It is not a de Polignac number, because 7665788713 - 2²¹ = 7663691561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7665788413) 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 in 3 ways as a sum of consecutive naturals, for example, 348444931 + ... + 348444952.

It is an arithmetic number, because the mean of its divisors is an integer number (2090669652).

Almost surely, 2^7665788713 is an apocalyptic number.

It is an amenable number.

7665788713 is a deficient number, since it is larger than the sum of its proper divisors (696889895).

7665788713 is a wasteful number, since it uses less digits than its factorization.

7665788713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696889894.

The product of its digits is 11854080, while the sum is 58.

The square root of 7665788713 is about 87554.4899648213. The cubic root of 7665788713 is about 1971.7519619711.

The spelling of 7665788713 in words is "seven billion, six hundred sixty-five million, seven hundred eighty-eight thousand, seven hundred thirteen".