122550560689 has 2 divisors, whose sum is σ = 122550560690. Its totient is φ = 122550560688.

The previous prime is 122550560651. The next prime is 122550560801. The reversal of 122550560689 is 986065055221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109465031025 + 13085529664 = 330855^2 + 114392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122550560689 is a prime.

It is not a weakly prime, because it can be changed into another prime (122550500689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61275280344 + 61275280345.

It is an arithmetic number, because the mean of its divisors is an integer number (61275280345).

Almost surely, 2^122550560689 is an apocalyptic number.

It is an amenable number.

122550560689 is a deficient number, since it is larger than the sum of its proper divisors (1).

122550560689 is an equidigital number, since it uses as much as digits as its factorization.

122550560689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 49.

The spelling of 122550560689 in words is "one hundred twenty-two billion, five hundred fifty million, five hundred sixty thousand, six hundred eighty-nine".