85115905775 has 6 divisors (see below), whose sum is σ = 105543723192. Its totient is φ = 68092724600.

The previous prime is 85115905769. The next prime is 85115905799. The reversal of 85115905775 is 57750951158.

It is not a de Polignac number, because 85115905775 - 2¹⁶ = 85115840239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1702318091 + ... + 1702318140.

It is an arithmetic number, because the mean of its divisors is an integer number (17590620532).

Almost surely, 2^85115905775 is an apocalyptic number.

85115905775 is a deficient number, since it is larger than the sum of its proper divisors (20427817417).

85115905775 is a wasteful number, since it uses less digits than its factorization.

85115905775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404636241 (or 3404636236 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 53.

The spelling of 85115905775 in words is "eighty-five billion, one hundred fifteen million, nine hundred five thousand, seven hundred seventy-five".