86686352918 has 24 divisors (see below), whose sum is σ = 148285972296. Its totient is φ = 37689713600.

The previous prime is 86686352891. The next prime is 86686352923. The reversal of 86686352918 is 81925368668.

It is a super-2 number, since 2×86686352918² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3712643 + ... + 3735918.

It is an arithmetic number, because the mean of its divisors is an integer number (6178582179).

Almost surely, 2^86686352918 is an apocalyptic number.

86686352918 is a deficient number, since it is larger than the sum of its proper divisors (61599619378).

86686352918 is a wasteful number, since it uses less digits than its factorization.

86686352918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448620 (or 7448597 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 62.

The spelling of 86686352918 in words is "eighty-six billion, six hundred eighty-six million, three hundred fifty-two thousand, nine hundred eighteen".