85444632386 has 16 divisors (see below), whose sum is σ = 132761714040. Its totient is φ = 41194621440.

The previous prime is 85444632379. The next prime is 85444632389. The reversal of 85444632386 is 68323644458.

It can be written as a sum of positive squares in 4 ways, for example, as 85194518161 + 250114225 = 291881^2 + 15815^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85444632389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929135 + ... + 1016946.

Almost surely, 2^85444632386 is an apocalyptic number.

85444632386 is a deficient number, since it is larger than the sum of its proper divisors (47317081654).

85444632386 is a wasteful number, since it uses less digits than its factorization.

85444632386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946869.

The product of its digits is 13271040, while the sum is 53.

The spelling of 85444632386 in words is "eighty-five billion, four hundred forty-four million, six hundred thirty-two thousand, three hundred eighty-six".