8548074672821 has 2 divisors, whose sum is σ = 8548074672822. Its totient is φ = 8548074672820.

The previous prime is 8548074672769. The next prime is 8548074672853. The reversal of 8548074672821 is 1282764708458.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6834303062500 + 1713771610321 = 2614250^2 + 1309111^2 .

It is a cyclic number.

It is not a de Polignac number, because 8548074672821 - 2¹⁰ = 8548074671797 is a prime.

It is a super-2 number, since 2×8548074672821² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8548074672721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4274037336410 + 4274037336411.

It is an arithmetic number, because the mean of its divisors is an integer number (4274037336411).

Almost surely, 2^{8548074672821} is an apocalyptic number.

It is an amenable number.

8548074672821 is a deficient number, since it is larger than the sum of its proper divisors (1).

8548074672821 is an equidigital number, since it uses as much as digits as its factorization.

8548074672821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48168960, while the sum is 62.

The spelling of 8548074672821 in words is "eight trillion, five hundred forty-eight billion, seventy-four million, six hundred seventy-two thousand, eight hundred twenty-one".