861783548328 has 48 divisors (see below), whose sum is σ = 2334073259700. Its totient is φ = 287251810560.

The previous prime is 861783548323. The next prime is 861783548363. The reversal of 861783548328 is 823845387168.

861783548328 is a `hidden beast` number, since 8 + 6 + 1 + 7 + 83 + 548 + 3 + 2 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 861700045284 + 83503044 = 928278^2 + 9138^2 .

It is not an unprimeable number, because it can be changed into a prime (861783548323) 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 11 ways as a sum of consecutive naturals, for example, 2235598 + ... + 2592578.

Almost surely, 2^861783548328 is an apocalyptic number.

It is an amenable number.

861783548328 is an abundant number, since it is smaller than the sum of its proper divisors (1472289711372).

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

861783548328 is a wasteful number, since it uses less digits than its factorization.

861783548328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390522 (or 390515 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The spelling of 861783548328 in words is "eight hundred sixty-one billion, seven hundred eighty-three million, five hundred forty-eight thousand, three hundred twenty-eight".