13129806779 has 2 divisors, whose sum is σ = 13129806780. Its totient is φ = 13129806778.

The previous prime is 13129806763. The next prime is 13129806817. The reversal of 13129806779 is 97760892131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13129806779 - 2⁴ = 13129806763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13129806779.

It is not a weakly prime, because it can be changed into another prime (13129806709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6564903389 + 6564903390.

It is an arithmetic number, because the mean of its divisors is an integer number (6564903390).

Almost surely, 2^13129806779 is an apocalyptic number.

13129806779 is a deficient number, since it is larger than the sum of its proper divisors (1).

13129806779 is an equidigital number, since it uses as much as digits as its factorization.

13129806779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 13129806779 in words is "thirteen billion, one hundred twenty-nine million, eight hundred six thousand, seven hundred seventy-nine".