68824897049 has 2 divisors, whose sum is σ = 68824897050. Its totient is φ = 68824897048.

The previous prime is 68824896971. The next prime is 68824897051. The reversal of 68824897049 is 94079842886.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67863897049 + 961000000 = 260507^2 + 31000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68824897049 is a prime.

It is a Sophie Germain prime.

Together with 68824897051, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (68824894049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34412448524 + 34412448525.

It is an arithmetic number, because the mean of its divisors is an integer number (34412448525).

Almost surely, 2^68824897049 is an apocalyptic number.

It is an amenable number.

68824897049 is a deficient number, since it is larger than the sum of its proper divisors (1).

68824897049 is an equidigital number, since it uses as much as digits as its factorization.

68824897049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55738368, while the sum is 65.

The spelling of 68824897049 in words is "sixty-eight billion, eight hundred twenty-four million, eight hundred ninety-seven thousand, forty-nine".