86646087818216 has 16 divisors (see below), whose sum is σ = 162489420506340. Its totient is φ = 43315575683200.

The previous prime is 86646087818159. The next prime is 86646087818219. The reversal of 86646087818216 is 61281878064668.

It can be written as a sum of positive squares in 2 ways, for example, as 53114506720900 + 33531581097316 = 7287970^2 + 5790646^2 .

It is a super-2 number, since 2×86646087818216² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86646087818216.

It is not an unprimeable number, because it can be changed into a prime (86646087818219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933478931 + ... + 933571746.

Almost surely, 2^{86646087818216} is an apocalyptic number.

It is an amenable number.

86646087818216 is a deficient number, since it is larger than the sum of its proper divisors (75843332688124).

86646087818216 is a wasteful number, since it uses less digits than its factorization.

86646087818216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867056484 (or 1867056480 counting only the distinct ones).

The product of its (nonzero) digits is 297271296, while the sum is 71.

The spelling of 86646087818216 in words is "eighty-six trillion, six hundred forty-six billion, eighty-seven million, eight hundred eighteen thousand, two hundred sixteen".