86171446138 has 16 divisors (see below), whose sum is σ = 131386340736. Its totient is φ = 42376109040.

The previous prime is 86171446093. The next prime is 86171446213. The reversal of 86171446138 is 83164417168.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 86171446091 and 86171446100.

It is an unprimeable number.

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, 2503795 + ... + 2537977.

It is an arithmetic number, because the mean of its divisors is an integer number (8211646296).

Almost surely, 2^86171446138 is an apocalyptic number.

86171446138 is a deficient number, since it is larger than the sum of its proper divisors (45214894598).

86171446138 is a wasteful number, since it uses less digits than its factorization.

86171446138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54909.

The product of its digits is 774144, while the sum is 49.

The spelling of 86171446138 in words is "eighty-six billion, one hundred seventy-one million, four hundred forty-six thousand, one hundred thirty-eight".