841821880321 has 4 divisors (see below), whose sum is σ = 841836208212. Its totient is φ = 841807552432.

The previous prime is 841821880297. The next prime is 841821880343. The reversal of 841821880321 is 123088128148.

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 437497582096 + 404324298225 = 661436^2 + 635865^2 .

It is a cyclic number.

It is not a de Polignac number, because 841821880321 - 2²¹ = 841819783169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (841821880021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7075450 + ... + 7193443.

It is an arithmetic number, because the mean of its divisors is an integer number (210459052053).

Almost surely, 2^841821880321 is an apocalyptic number.

It is an amenable number.

841821880321 is a deficient number, since it is larger than the sum of its proper divisors (14327891).

841821880321 is a wasteful number, since it uses less digits than its factorization.

841821880321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14327890.

The product of its (nonzero) digits is 196608, while the sum is 46.

The spelling of 841821880321 in words is "eight hundred forty-one billion, eight hundred twenty-one million, eight hundred eighty thousand, three hundred twenty-one".