281827000001 has 4 divisors (see below), whose sum is σ = 281829316692. Its totient is φ = 281824683312.

The previous prime is 281826999953. The next prime is 281827000043. The reversal of 281827000001 is 100000728182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50985188401 + 230841811600 = 225799^2 + 480460^2 .

It is a cyclic number.

It is not a de Polignac number, because 281827000001 - 2²² = 281822805697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281827000601) 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 3 ways as a sum of consecutive naturals, for example, 965126 + ... + 1222751.

It is an arithmetic number, because the mean of its divisors is an integer number (70457329173).

Almost surely, 2^281827000001 is an apocalyptic number.

It is an amenable number.

281827000001 is a deficient number, since it is larger than the sum of its proper divisors (2316691).

281827000001 is a wasteful number, since it uses less digits than its factorization.

281827000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316690.

The product of its (nonzero) digits is 1792, while the sum is 29.

Adding to 281827000001 its reverse (100000728182), we get a palindrome (381827728183).

The spelling of 281827000001 in words is "two hundred eighty-one billion, eight hundred twenty-seven million, one", and thus it is an aban number.