122636447797 has 2 divisors, whose sum is σ = 122636447798. Its totient is φ = 122636447796.

The previous prime is 122636447789. The next prime is 122636447803. The reversal of 122636447797 is 797744636221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95035941841 + 27600505956 = 308279^2 + 166134^2 .

It is a cyclic number.

It is not a de Polignac number, because 122636447797 - 2³ = 122636447789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122636447707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61318223898 + 61318223899.

It is an arithmetic number, because the mean of its divisors is an integer number (61318223899).

Almost surely, 2^122636447797 is an apocalyptic number.

It is an amenable number.

122636447797 is a deficient number, since it is larger than the sum of its proper divisors (1).

122636447797 is an equidigital number, since it uses as much as digits as its factorization.

122636447797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21337344, while the sum is 58.

The spelling of 122636447797 in words is "one hundred twenty-two billion, six hundred thirty-six million, four hundred forty-seven thousand, seven hundred ninety-seven".