8447522240891 has 2 divisors, whose sum is σ = 8447522240892. Its totient is φ = 8447522240890.

The previous prime is 8447522240873. The next prime is 8447522240897. The reversal of 8447522240891 is 1980422257448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8447522240891 - 2³⁰ = 8446448499067 is a prime.

It is not a weakly prime, because it can be changed into another prime (8447522240897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4223761120445 + 4223761120446.

It is an arithmetic number, because the mean of its divisors is an integer number (4223761120446).

Almost surely, 2^{8447522240891} is an apocalyptic number.

8447522240891 is a deficient number, since it is larger than the sum of its proper divisors (1).

8447522240891 is an equidigital number, since it uses as much as digits as its factorization.

8447522240891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 8447522240891 in words is "eight trillion, four hundred forty-seven billion, five hundred twenty-two million, two hundred forty thousand, eight hundred ninety-one".