863322744821 has 4 divisors (see below), whose sum is σ = 869040114144. Its totient is φ = 857605375500.

The previous prime is 863322744811. The next prime is 863322744839. The reversal of 863322744821 is 128447223368.

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 863322744821 - 2³⁰ = 862249002997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 863322744821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863322744811) 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, 2858684435 + ... + 2858684736.

It is an arithmetic number, because the mean of its divisors is an integer number (217260028536).

Almost surely, 2^863322744821 is an apocalyptic number.

It is an amenable number.

863322744821 is a deficient number, since it is larger than the sum of its proper divisors (5717369323).

863322744821 is a wasteful number, since it uses less digits than its factorization.

863322744821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5717369322.

The product of its digits is 3096576, while the sum is 50.

The spelling of 863322744821 in words is "eight hundred sixty-three billion, three hundred twenty-two million, seven hundred forty-four thousand, eight hundred twenty-one".