7668716515 has 8 divisors (see below), whose sum is σ = 9249174000. Its totient is φ = 6103830432.

The previous prime is 7668716453. The next prime is 7668716527. The reversal of 7668716515 is 5156178667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7668716515 - 2²⁵ = 7635162083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3891765 + ... + 3893734.

It is an arithmetic number, because the mean of its divisors is an integer number (1156146750).

Almost surely, 2^7668716515 is an apocalyptic number.

7668716515 is a deficient number, since it is larger than the sum of its proper divisors (1580457485).

7668716515 is a wasteful number, since it uses less digits than its factorization.

7668716515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785701.

The product of its digits is 2116800, while the sum is 52.

The square root of 7668716515 is about 87571.2082536264. The cubic root of 7668716515 is about 1972.0029543895.

The spelling of 7668716515 in words is "seven billion, six hundred sixty-eight million, seven hundred sixteen thousand, five hundred fifteen".