86638518717 has 8 divisors (see below), whose sum is σ = 117145039680. Its totient is φ = 56945505120.

The previous prime is 86638518661. The next prime is 86638518721. The reversal of 86638518717 is 71781583668.

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

It is not a de Polignac number, because 86638518717 - 2²⁷ = 86504300989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86638518797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203376592 + ... + 203377017.

It is an arithmetic number, because the mean of its divisors is an integer number (14643129960).

Almost surely, 2^86638518717 is an apocalyptic number.

It is an amenable number.

86638518717 is a deficient number, since it is larger than the sum of its proper divisors (30506520963).

86638518717 is a wasteful number, since it uses less digits than its factorization.

86638518717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406753683.

The product of its digits is 13547520, while the sum is 60.

The spelling of 86638518717 in words is "eighty-six billion, six hundred thirty-eight million, five hundred eighteen thousand, seven hundred seventeen".