284143480821 has 32 divisors (see below), whose sum is σ = 422775936000. Its totient is φ = 188610441264.

The previous prime is 284143480811. The next prime is 284143480843. The reversal of 284143480821 is 128084341482.

284143480821 is a `hidden beast` number, since 2 + 8 + 4 + 143 + 480 + 8 + 21 = 666.

It is not a de Polignac number, because 284143480821 - 2⁶ = 284143480757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284143480801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6365446 + ... + 6409928.

It is an arithmetic number, because the mean of its divisors is an integer number (13211748000).

Almost surely, 2^284143480821 is an apocalyptic number.

It is an amenable number.

284143480821 is a deficient number, since it is larger than the sum of its proper divisors (138632455179).

284143480821 is a wasteful number, since it uses less digits than its factorization.

284143480821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45510 (or 45504 counting only the distinct ones).

The product of its (nonzero) digits is 393216, while the sum is 45.

The spelling of 284143480821 in words is "two hundred eighty-four billion, one hundred forty-three million, four hundred eighty thousand, eight hundred twenty-one".