85618686656 has 14 divisors (see below), whose sum is σ = 169899581460. Its totient is φ = 42809343296.

The previous prime is 85618686641. The next prime is 85618686719. The reversal of 85618686656 is 65668681658.

It is a junction number, because it is equal to n+sod(n) for n = 85618686592 and 85618686601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668895926 + ... + 668896053.

It is an arithmetic number, because the mean of its divisors is an integer number (12135684390).

Almost surely, 2^85618686656 is an apocalyptic number.

It is an amenable number.

85618686656 is a deficient number, since it is larger than the sum of its proper divisors (84280894804).

85618686656 is a wasteful number, since it uses less digits than its factorization.

85618686656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337791991 (or 1337791981 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 65.

The spelling of 85618686656 in words is "eighty-five billion, six hundred eighteen million, six hundred eighty-six thousand, six hundred fifty-six".