86688286891 has 4 divisors (see below), whose sum is σ = 86707348000. Its totient is φ = 86669225784.

The previous prime is 86688286849. The next prime is 86688286907. The reversal of 86688286891 is 19868288668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86688286891 - 2⁹ = 86688286379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86688286891.

It is not an unprimeable number, because it can be changed into a prime (86688286291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9523731 + ... + 9532828.

It is an arithmetic number, because the mean of its divisors is an integer number (21676837000).

Almost surely, 2^86688286891 is an apocalyptic number.

86688286891 is a deficient number, since it is larger than the sum of its proper divisors (19061109).

86688286891 is a wasteful number, since it uses less digits than its factorization.

86688286891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19061108.

The product of its digits is 127401984, while the sum is 70.

The spelling of 86688286891 in words is "eighty-six billion, six hundred eighty-eight million, two hundred eighty-six thousand, eight hundred ninety-one".