461281302821 has 4 divisors (see below), whose sum is σ = 461286007392. Its totient is φ = 461276598252.

The previous prime is 461281302787. The next prime is 461281302829. The reversal of 461281302821 is 128203182164.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461281302821 - 2¹⁰ = 461281301797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461281302829) 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 3 ways as a sum of consecutive naturals, for example, 2202011 + ... + 2402376.

It is an arithmetic number, because the mean of its divisors is an integer number (115321501848).

Almost surely, 2^461281302821 is an apocalyptic number.

It is an amenable number.

461281302821 is a deficient number, since it is larger than the sum of its proper divisors (4704571).

461281302821 is a wasteful number, since it uses less digits than its factorization.

461281302821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4704570.

The product of its (nonzero) digits is 36864, while the sum is 38.

Adding to 461281302821 its reverse (128203182164), we get a palindrome (589484484985).

The spelling of 461281302821 in words is "four hundred sixty-one billion, two hundred eighty-one million, three hundred two thousand, eight hundred twenty-one".