85009289668 has 12 divisors (see below), whose sum is σ = 149852142972. Its totient is φ = 42194391680.

The previous prime is 85009289663. The next prime is 85009289711. The reversal of 85009289668 is 86698290058.

It can be written as a sum of positive squares in 2 ways, for example, as 32278434244 + 52730855424 = 179662^2 + 229632^2 .

It is not an unprimeable number, because it can be changed into a prime (85009289663) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 77562673 + ... + 77563768.

It is an arithmetic number, because the mean of its divisors is an integer number (12487678581).

Almost surely, 2^85009289668 is an apocalyptic number.

It is an amenable number.

85009289668 is a deficient number, since it is larger than the sum of its proper divisors (64842853304).

85009289668 is a wasteful number, since it uses less digits than its factorization.

85009289668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155126582 (or 155126580 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 61.

The spelling of 85009289668 in words is "eighty-five billion, nine million, two hundred eighty-nine thousand, six hundred sixty-eight".