85730886666 has 48 divisors (see below), whose sum is σ = 186477208008. Its totient is φ = 28465344000.

The previous prime is 85730886643. The next prime is 85730886677. The reversal of 85730886666 is 66668803758.

It can be written as a sum of positive squares in 4 ways, for example, as 81213030441 + 4517856225 = 284979^2 + 67215^2 .

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 23 ways as a sum of consecutive naturals, for example, 4935156 + ... + 4952496.

Almost surely, 2^85730886666 is an apocalyptic number.

85730886666 is an abundant number, since it is smaller than the sum of its proper divisors (100746321342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85730886666 is a wasteful number, since it uses less digits than its factorization.

85730886666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18407 (or 18404 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 85730886666 in words is "eighty-five billion, seven hundred thirty million, eight hundred eighty-six thousand, six hundred sixty-six".