85405171180 has 48 divisors (see below), whose sum is σ = 205640176896. Its totient is φ = 29186377920.

The previous prime is 85405171097. The next prime is 85405171193. The reversal of 85405171180 is 8117150458.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 950566 + ... + 1036525.

It is an arithmetic number, because the mean of its divisors is an integer number (4284170352).

Almost surely, 2^85405171180 is an apocalyptic number.

It is an amenable number.

85405171180 is an abundant number, since it is smaller than the sum of its proper divisors (120235005716).

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

85405171180 is a wasteful number, since it uses less digits than its factorization.

85405171180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987414 (or 1987412 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 40.

The spelling of 85405171180 in words is "eighty-five billion, four hundred five million, one hundred seventy-one thousand, one hundred eighty".