68224822849 has 2 divisors, whose sum is σ = 68224822850. Its totient is φ = 68224822848.

The previous prime is 68224822843. The next prime is 68224822867. The reversal of 68224822849 is 94822842286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65630754225 + 2594068624 = 256185^2 + 50932^2 .

It is a cyclic number.

It is not a de Polignac number, because 68224822849 - 2⁵ = 68224822817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68224822849.

It is not a weakly prime, because it can be changed into another prime (68224822843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34112411424 + 34112411425.

It is an arithmetic number, because the mean of its divisors is an integer number (34112411425).

Almost surely, 2^68224822849 is an apocalyptic number.

It is an amenable number.

68224822849 is a deficient number, since it is larger than the sum of its proper divisors (1).

68224822849 is an equidigital number, since it uses as much as digits as its factorization.

68224822849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7077888, while the sum is 55.

The spelling of 68224822849 in words is "sixty-eight billion, two hundred twenty-four million, eight hundred twenty-two thousand, eight hundred forty-nine".