85679783585 has 12 divisors (see below), whose sum is σ = 113012343444. Its totient is φ = 62312569440.

The previous prime is 85679783551. The next prime is 85679783639. The reversal of 85679783585 is 58538797658.

It can be written as a sum of positive squares in 2 ways, for example, as 10072932496 + 75606851089 = 100364^2 + 274967^2 .

It is not a de Polignac number, because 85679783585 - 2⁶ = 85679783521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70809134 + ... + 70810343.

It is an arithmetic number, because the mean of its divisors is an integer number (9417695287).

Almost surely, 2^85679783585 is an apocalyptic number.

It is an amenable number.

85679783585 is a deficient number, since it is larger than the sum of its proper divisors (27332559859).

85679783585 is a wasteful number, since it uses less digits than its factorization.

85679783585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141619504 (or 141619493 counting only the distinct ones).

The product of its digits is 508032000, while the sum is 71.

The spelling of 85679783585 in words is "eighty-five billion, six hundred seventy-nine million, seven hundred eighty-three thousand, five hundred eighty-five".