86566844360215 has 32 divisors (see below), whose sum is σ = 106160150992896. Its totient is φ = 67735468684800.

The previous prime is 86566844360197. The next prime is 86566844360317. The reversal of 86566844360215 is 51206344866568.

It is a happy number.

It is not a de Polignac number, because 86566844360215 - 2¹⁷ = 86566844229143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2543597839 + ... + 2543631871.

It is an arithmetic number, because the mean of its divisors is an integer number (3317504718528).

Almost surely, 2^{86566844360215} is an apocalyptic number.

86566844360215 is a deficient number, since it is larger than the sum of its proper divisors (19593306632681).

86566844360215 is a wasteful number, since it uses less digits than its factorization.

86566844360215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40879.

The product of its (nonzero) digits is 199065600, while the sum is 64.

The spelling of 86566844360215 in words is "eighty-six trillion, five hundred sixty-six billion, eight hundred forty-four million, three hundred sixty thousand, two hundred fifteen".