85531717823 has 8 divisors (see below), whose sum is σ = 90570668400. Its totient is φ = 80493619840.

The previous prime is 85531717807. The next prime is 85531717853. The reversal of 85531717823 is 32871713558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85531717823 - 2⁴ = 85531717807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85531717853) 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, 533 + ... + 413598.

It is an arithmetic number, because the mean of its divisors is an integer number (11321333550).

Almost surely, 2^85531717823 is an apocalyptic number.

85531717823 is a deficient number, since it is larger than the sum of its proper divisors (5038950577).

85531717823 is a wasteful number, since it uses less digits than its factorization.

85531717823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426297.

The product of its digits is 1411200, while the sum is 50.

The spelling of 85531717823 in words is "eighty-five billion, five hundred thirty-one million, seven hundred seventeen thousand, eight hundred twenty-three".