86638575556 has 48 divisors (see below), whose sum is σ = 169243635456. Its totient is φ = 38552050944.

The previous prime is 86638575511. The next prime is 86638575559. The reversal of 86638575556 is 65557583668.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (86638575559) 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 15 ways as a sum of consecutive naturals, for example, 100801 + ... + 428296.

It is an arithmetic number, because the mean of its divisors is an integer number (3525909072).

Almost surely, 2^86638575556 is an apocalyptic number.

It is an amenable number.

86638575556 is a deficient number, since it is larger than the sum of its proper divisors (82605059900).

86638575556 is a wasteful number, since it uses less digits than its factorization.

86638575556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529228 (or 529226 counting only the distinct ones).

The product of its digits is 181440000, while the sum is 64.

The spelling of 86638575556 in words is "eighty-six billion, six hundred thirty-eight million, five hundred seventy-five thousand, five hundred fifty-six".