85170088859 has 4 divisors (see below), whose sum is σ = 90180094104. Its totient is φ = 80160083616.

The previous prime is 85170088853. The next prime is 85170088909. The reversal of 85170088859 is 95888007158.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85170088859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85170088798 and 85170088807.

It is not an unprimeable number, because it can be changed into a prime (85170088853) 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, 2505002597 + ... + 2505002630.

It is an arithmetic number, because the mean of its divisors is an integer number (22545023526).

Almost surely, 2^85170088859 is an apocalyptic number.

85170088859 is a deficient number, since it is larger than the sum of its proper divisors (5010005245).

85170088859 is a wasteful number, since it uses less digits than its factorization.

85170088859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5010005244.

The product of its (nonzero) digits is 6451200, while the sum is 59.

The spelling of 85170088859 in words is "eighty-five billion, one hundred seventy million, eighty-eight thousand, eight hundred fifty-nine".