79822710109 has 2 divisors, whose sum is σ = 79822710110. Its totient is φ = 79822710108.

The previous prime is 79822710067. The next prime is 79822710127. The reversal of 79822710109 is 90101722897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56984851225 + 22837858884 = 238715^2 + 151122^2 .

It is an emirp because it is prime and its reverse (90101722897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79822710109 - 2⁹ = 79822709597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79822717109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39911355054 + 39911355055.

It is an arithmetic number, because the mean of its divisors is an integer number (39911355055).

Almost surely, 2^79822710109 is an apocalyptic number.

It is an amenable number.

79822710109 is a deficient number, since it is larger than the sum of its proper divisors (1).

79822710109 is an equidigital number, since it uses as much as digits as its factorization.

79822710109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 46.

The spelling of 79822710109 in words is "seventy-nine billion, eight hundred twenty-two million, seven hundred ten thousand, one hundred nine".