13220128279 has 2 divisors, whose sum is σ = 13220128280. Its totient is φ = 13220128278.

The previous prime is 13220128253. The next prime is 13220128291. The reversal of 13220128279 is 97282102231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220128279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13220128079) 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, 6610064139 + 6610064140.

It is an arithmetic number, because the mean of its divisors is an integer number (6610064140).

Almost surely, 2^13220128279 is an apocalyptic number.

13220128279 is a deficient number, since it is larger than the sum of its proper divisors (1).

13220128279 is an equidigital number, since it uses as much as digits as its factorization.

13220128279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 13220128279 in words is "thirteen billion, two hundred twenty million, one hundred twenty-eight thousand, two hundred seventy-nine".