855821481700 has 36 divisors (see below), whose sum is σ = 1966375714212. Its totient is φ = 322191616000.

The previous prime is 855821481653. The next prime is 855821481707. The reversal of 855821481700 is 7184128558.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 87099355876 + 768722125824 = 295126^2 + 876768^2 .

It is not an unprimeable number, because it can be changed into a prime (855821481707) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 251710501 + ... + 251713900.

It is an arithmetic number, because the mean of its divisors is an integer number (54621547617).

Almost surely, 2^855821481700 is an apocalyptic number.

It is an amenable number.

855821481700 is an abundant number, since it is smaller than the sum of its proper divisors (1110554232512).

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

855821481700 is a wasteful number, since it uses less digits than its factorization.

855821481700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503424432 (or 503424425 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 49.

The spelling of 855821481700 in words is "eight hundred fifty-five billion, eight hundred twenty-one million, four hundred eighty-one thousand, seven hundred".