284001996681 has 24 divisors (see below), whose sum is σ = 444745883400. Its totient is φ = 173597492736.

The previous prime is 284001996673. The next prime is 284001996683. The reversal of 284001996681 is 186699100482.

284001996681 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 675740025 + 283326256656 = 25995^2 + 532284^2 .

It is not a de Polignac number, because 284001996681 - 2³ = 284001996673 is a prime.

It is a super-2 number, since 2×284001996681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (284001996683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8128096 + ... + 8162961.

It is an arithmetic number, because the mean of its divisors is an integer number (18531078475).

Almost surely, 2^284001996681 is an apocalyptic number.

It is an amenable number.

284001996681 is a deficient number, since it is larger than the sum of its proper divisors (160743886719).

284001996681 is a wasteful number, since it uses less digits than its factorization.

284001996681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16291225 (or 16291222 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 284001996681 in words is "two hundred eighty-four billion, one million, nine hundred ninety-six thousand, six hundred eighty-one".