7717959816 has 96 divisors (see below), whose sum is σ = 22486883040. Its totient is φ = 2201025792.

The previous prime is 7717959811. The next prime is 7717959827. The reversal of 7717959816 is 6189597177.

It is a self number, because there is not a number n which added to its sum of digits gives 7717959816.

It is not an unprimeable number, because it can be changed into a prime (7717959811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 656260 + ... + 667916.

It is an arithmetic number, because the mean of its divisors is an integer number (234238365).

Almost surely, 2^7717959816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7717959816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11243441520).

7717959816 is an abundant number, since it is smaller than the sum of its proper divisors (14768923224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7717959816 is a wasteful number, since it uses less digits than its factorization.

7717959816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12243 (or 12232 counting only the distinct ones).

The product of its digits is 6667920, while the sum is 60.

The square root of 7717959816 is about 87851.9198196602. The cubic root of 7717959816 is about 1976.2149073467.

The spelling of 7717959816 in words is "seven billion, seven hundred seventeen million, nine hundred fifty-nine thousand, eight hundred sixteen".