855859180800 has 216 divisors, whose sum is σ = 3041784764704. Its totient is φ = 210672967680.

The previous prime is 855859180777. The next prime is 855859180829. The reversal of 855859180800 is 8081958558.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1464862 + ... + 1964061.

Almost surely, 2^855859180800 is an apocalyptic number.

855859180800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

855859180800 is an abundant number, since it is smaller than the sum of its proper divisors (2185925583904).

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

855859180800 is a wasteful number, since it uses less digits than its factorization.

855859180800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428965 (or 3428946 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 57.

The spelling of 855859180800 in words is "eight hundred fifty-five billion, eight hundred fifty-nine million, one hundred eighty thousand, eight hundred".