8268791434549 has 2 divisors, whose sum is σ = 8268791434550. Its totient is φ = 8268791434548.

The previous prime is 8268791434517. The next prime is 8268791434583. The reversal of 8268791434549 is 9454341978628.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6866532845649 + 1402258588900 = 2620407^2 + 1184170^2 .

It is a cyclic number.

It is not a de Polignac number, because 8268791434549 - 2⁵ = 8268791434517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8268791434649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4134395717274 + 4134395717275.

It is an arithmetic number, because the mean of its divisors is an integer number (4134395717275).

Almost surely, 2^{8268791434549} is an apocalyptic number.

It is an amenable number.

8268791434549 is a deficient number, since it is larger than the sum of its proper divisors (1).

8268791434549 is an equidigital number, since it uses as much as digits as its factorization.

8268791434549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 418037760, while the sum is 70.

The spelling of 8268791434549 in words is "eight trillion, two hundred sixty-eight billion, seven hundred ninety-one million, four hundred thirty-four thousand, five hundred forty-nine".