86885258868 has 18 divisors (see below), whose sum is σ = 219626626674. Its totient is φ = 28961752944.

The previous prime is 86885258851. The next prime is 86885258869.

86885258868 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 71042505444 + 15842753424 = 266538^2 + 125868^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 86885258796 and 86885258805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86885258869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1206739671 + ... + 1206739742.

Almost surely, 2^86885258868 is an apocalyptic number.

It is an amenable number.

86885258868 is an abundant number, since it is smaller than the sum of its proper divisors (132741367806).

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

86885258868 is a wasteful number, since it uses less digits than its factorization.

86885258868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413479423 (or 2413479418 counting only the distinct ones).

The product of its digits is 471859200, while the sum is 72.

The spelling of 86885258868 in words is "eighty-six billion, eight hundred eighty-five million, two hundred fifty-eight thousand, eight hundred sixty-eight".