85684138896385 has 16 divisors (see below), whose sum is σ = 102944017972800. Its totient is φ = 68465282124096.

The previous prime is 85684138896353. The next prime is 85684138896407. The reversal of 85684138896385 is 58369883148658.

It is a cyclic number.

It is not a de Polignac number, because 85684138896385 - 2⁵ = 85684138896353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85684138896299 and 85684138896308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138458422 + ... + 139075888.

It is an arithmetic number, because the mean of its divisors is an integer number (6434001123300).

Almost surely, 2^{85684138896385} is an apocalyptic number.

It is an amenable number.

85684138896385 is a deficient number, since it is larger than the sum of its proper divisors (17259879076415).

85684138896385 is a wasteful number, since it uses less digits than its factorization.

85684138896385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650640.

The product of its digits is 9555148800, while the sum is 82.

The spelling of 85684138896385 in words is "eighty-five trillion, six hundred eighty-four billion, one hundred thirty-eight million, eight hundred ninety-six thousand, three hundred eighty-five".