846682028021 has 2 divisors, whose sum is σ = 846682028022. Its totient is φ = 846682028020.

The previous prime is 846682027999. The next prime is 846682028053. The reversal of 846682028021 is 120820286648.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683575089796 + 163106938225 = 826786^2 + 403865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-846682028021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (846682328021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423341014010 + 423341014011.

It is an arithmetic number, because the mean of its divisors is an integer number (423341014011).

Almost surely, 2^846682028021 is an apocalyptic number.

It is an amenable number.

846682028021 is a deficient number, since it is larger than the sum of its proper divisors (1).

846682028021 is an equidigital number, since it uses as much as digits as its factorization.

846682028021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 589824, while the sum is 47.

The spelling of 846682028021 in words is "eight hundred forty-six billion, six hundred eighty-two million, twenty-eight thousand, twenty-one".