86278528218215 has 16 divisors (see below), whose sum is σ = 107075534100480. Its totient is φ = 66699134754720.

The previous prime is 86278528218187. The next prime is 86278528218217. The reversal of 86278528218215 is 51281282587268.

It is a happy number.

It is not a de Polignac number, because 86278528218215 - 2¹⁰ = 86278528217191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86278528218217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2323669241 + ... + 2323706370.

It is an arithmetic number, because the mean of its divisors is an integer number (6692220881280).

Almost surely, 2^{86278528218215} is an apocalyptic number.

86278528218215 is a deficient number, since it is larger than the sum of its proper divisors (20797005882265).

86278528218215 is a wasteful number, since it uses less digits than its factorization.

86278528218215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647375742.

The product of its digits is 68812800, while the sum is 65.

The spelling of 86278528218215 in words is "eighty-six trillion, two hundred seventy-eight billion, five hundred twenty-eight million, two hundred eighteen thousand, two hundred fifteen".