85491243474 has 48 divisors (see below), whose sum is σ = 211596265152. Its totient is φ = 22547139264.

The previous prime is 85491243449. The next prime is 85491243511. The reversal of 85491243474 is 47434219458.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6015109 + ... + 6029304.

It is an arithmetic number, because the mean of its divisors is an integer number (4408255524).

Almost surely, 2^85491243474 is an apocalyptic number.

85491243474 is an abundant number, since it is smaller than the sum of its proper divisors (126105021678).

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

85491243474 is a wasteful number, since it uses less digits than its factorization.

85491243474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12044451 (or 12044438 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The spelling of 85491243474 in words is "eighty-five billion, four hundred ninety-one million, two hundred forty-three thousand, four hundred seventy-four".