19769069129 has 2 divisors, whose sum is σ = 19769069130. Its totient is φ = 19769069128.

The previous prime is 19769069093. The next prime is 19769069147. The reversal of 19769069129 is 92196096791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12800659600 + 6968409529 = 113140^2 + 83477^2 .

It is a cyclic number.

It is not a de Polignac number, because 19769069129 - 2¹⁶ = 19769003593 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19769069029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9884534564 + 9884534565.

It is an arithmetic number, because the mean of its divisors is an integer number (9884534565).

Almost surely, 2^19769069129 is an apocalyptic number.

It is an amenable number.

19769069129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19769069129 is an equidigital number, since it uses as much as digits as its factorization.

19769069129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3306744, while the sum is 59.

The spelling of 19769069129 in words is "nineteen billion, seven hundred sixty-nine million, sixty-nine thousand, one hundred twenty-nine".