122780708708279 has 2 divisors, whose sum is σ = 122780708708280. Its totient is φ = 122780708708278.

The previous prime is 122780708708171. The next prime is 122780708708291. The reversal of 122780708708279 is 972807807087221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122780708708279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122780708704279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61390354354139 + 61390354354140.

It is an arithmetic number, because the mean of its divisors is an integer number (61390354354140).

Almost surely, 2^{122780708708279} is an apocalyptic number.

122780708708279 is a deficient number, since it is larger than the sum of its proper divisors (1).

122780708708279 is an equidigital number, since it uses as much as digits as its factorization.

122780708708279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 88510464, while the sum is 68.

The spelling of 122780708708279 in words is "one hundred twenty-two trillion, seven hundred eighty billion, seven hundred eight million, seven hundred eight thousand, two hundred seventy-nine".