85491243475 has 48 divisors (see below), whose sum is σ = 123343775136. Its totient is φ = 58090496000.

The previous prime is 85491243449. The next prime is 85491243511. The reversal of 85491243475 is 57434219458.

It is not a de Polignac number, because 85491243475 - 2⁵ = 85491243443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 573735 + ... + 707215.

It is an arithmetic number, because the mean of its divisors is an integer number (2569661982).

Almost surely, 2^85491243475 is an apocalyptic number.

85491243475 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

85491243475 is a deficient number, since it is larger than the sum of its proper divisors (37852531661).

85491243475 is a wasteful number, since it uses less digits than its factorization.

85491243475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133656 (or 133651 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The spelling of 85491243475 in words is "eighty-five billion, four hundred ninety-one million, two hundred forty-three thousand, four hundred seventy-five".