13279771229 has 2 divisors, whose sum is σ = 13279771230. Its totient is φ = 13279771228.

The previous prime is 13279771189. The next prime is 13279771237. The reversal of 13279771229 is 92217797231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11873371225 + 1406400004 = 108965^2 + 37502^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13279771229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13279771259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6639885614 + 6639885615.

It is an arithmetic number, because the mean of its divisors is an integer number (6639885615).

Almost surely, 2^13279771229 is an apocalyptic number.

It is an amenable number.

13279771229 is a deficient number, since it is larger than the sum of its proper divisors (1).

13279771229 is an equidigital number, since it uses as much as digits as its factorization.

13279771229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 666792, while the sum is 50.

The spelling of 13279771229 in words is "thirteen billion, two hundred seventy-nine million, seven hundred seventy-one thousand, two hundred twenty-nine".