85044191800 has 24 divisors (see below), whose sum is σ = 197727746400. Its totient is φ = 34017676640.

The previous prime is 85044191797. The next prime is 85044191809. The reversal of 85044191800 is 819144058.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85044191809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 212610280 + ... + 212610679.

It is an arithmetic number, because the mean of its divisors is an integer number (8238656100).

Almost surely, 2^85044191800 is an apocalyptic number.

It is an amenable number.

85044191800 is an abundant number, since it is smaller than the sum of its proper divisors (112683554600).

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

85044191800 is a wasteful number, since it uses less digits than its factorization.

85044191800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425220975 (or 425220966 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 85044191800 in words is "eighty-five billion, forty-four million, one hundred ninety-one thousand, eight hundred".