8294802080021 has 2 divisors, whose sum is σ = 8294802080022. Its totient is φ = 8294802080020.

The previous prime is 8294802080009. The next prime is 8294802080053. The reversal of 8294802080021 is 1200802084928.

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., 4505982652900 + 3788819427121 = 2122730^2 + 1946489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8294802080021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8294802080921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4147401040010 + 4147401040011.

It is an arithmetic number, because the mean of its divisors is an integer number (4147401040011).

Almost surely, 2^{8294802080021} is an apocalyptic number.

It is an amenable number.

8294802080021 is a deficient number, since it is larger than the sum of its proper divisors (1).

8294802080021 is an equidigital number, since it uses as much as digits as its factorization.

8294802080021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 8294802080021 in words is "eight trillion, two hundred ninety-four billion, eight hundred two million, eighty thousand, twenty-one".