8544426881 has 2 divisors, whose sum is σ = 8544426882. Its totient is φ = 8544426880.

The previous prime is 8544426871. The next prime is 8544426931. The reversal of 8544426881 is 1886244458.

It is an a-pointer prime, because the next prime (8544426931) can be obtained adding 8544426881 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6222054400 + 2322372481 = 78880^2 + 48191^2 .

It is a cyclic number.

It is not a de Polignac number, because 8544426881 - 2¹⁸ = 8544164737 is a prime.

It is a super-2 number, since 2×8544426881² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8544426851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4272213440 + 4272213441.

It is an arithmetic number, because the mean of its divisors is an integer number (4272213441).

Almost surely, 2^8544426881 is an apocalyptic number.

It is an amenable number.

8544426881 is a deficient number, since it is larger than the sum of its proper divisors (1).

8544426881 is an equidigital number, since it uses as much as digits as its factorization.

8544426881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1966080, while the sum is 50.

The square root of 8544426881 is about 92436.0691559307. The cubic root of 8544426881 is about 2044.3769664867.

The spelling of 8544426881 in words is "eight billion, five hundred forty-four million, four hundred twenty-six thousand, eight hundred eighty-one".