85671605584 has 20 divisors (see below), whose sum is σ = 171712486260. Its totient is φ = 41358705920.

The previous prime is 85671605581. The next prime is 85671605599. The reversal of 85671605584 is 48550617658.

It can be written as a sum of positive squares in 2 ways, for example, as 59662947600 + 26008657984 = 244260^2 + 161272^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85671605581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92318077 + ... + 92319004.

It is an arithmetic number, because the mean of its divisors is an integer number (8585624313).

Almost surely, 2^85671605584 is an apocalyptic number.

It is an amenable number.

85671605584 is an abundant number, since it is smaller than the sum of its proper divisors (86040880676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85671605584 is a wasteful number, since it uses less digits than its factorization.

85671605584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184637118 (or 184637112 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 85671605584 in words is "eighty-five billion, six hundred seventy-one million, six hundred five thousand, five hundred eighty-four".