86887878868 has 24 divisors (see below), whose sum is σ = 176156251712. Its totient is φ = 36727556544.

The previous prime is 86887878863. The next prime is 86887878899.

86887878868 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×86887878868² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86887878791 and 86887878800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86887878863) 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 7 ways as a sum of consecutive naturals, for example, 21252330 + ... + 21256417.

Almost surely, 2^86887878868 is an apocalyptic number.

It is an amenable number.

86887878868 is an abundant number, since it is smaller than the sum of its proper divisors (89268372844).

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

86887878868 is a wasteful number, since it uses less digits than its factorization.

86887878868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42508831 (or 42508829 counting only the distinct ones).

The product of its digits is 3699376128, while the sum is 82.

The spelling of 86887878868 in words is "eighty-six billion, eight hundred eighty-seven million, eight hundred seventy-eight thousand, eight hundred sixty-eight".