8420743052881 has 2 divisors, whose sum is σ = 8420743052882. Its totient is φ = 8420743052880.

The previous prime is 8420743052873. The next prime is 8420743052903. The reversal of 8420743052881 is 1882503470248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5965830675025 + 2454912377856 = 2442505^2 + 1566816^2 .

It is a cyclic number.

It is not a de Polignac number, because 8420743052881 - 2³ = 8420743052873 is a prime.

It is a super-2 number, since 2×8420743052881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8420743052681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4210371526440 + 4210371526441.

It is an arithmetic number, because the mean of its divisors is an integer number (4210371526441).

Almost surely, 2^{8420743052881} is an apocalyptic number.

It is an amenable number.

8420743052881 is a deficient number, since it is larger than the sum of its proper divisors (1).

8420743052881 is an equidigital number, since it uses as much as digits as its factorization.

8420743052881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 8420743052881 in words is "eight trillion, four hundred twenty billion, seven hundred forty-three million, fifty-two thousand, eight hundred eighty-one".