129804428867 has 2 divisors, whose sum is σ = 129804428868. Its totient is φ = 129804428866.

The previous prime is 129804428861. The next prime is 129804428891. The reversal of 129804428867 is 768824408921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129804428867 - 2¹⁴ = 129804412483 is a prime.

It is not a weakly prime, because it can be changed into another prime (129804428861) 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, 64902214433 + 64902214434.

It is an arithmetic number, because the mean of its divisors is an integer number (64902214434).

Almost surely, 2^129804428867 is an apocalyptic number.

129804428867 is a deficient number, since it is larger than the sum of its proper divisors (1).

129804428867 is an equidigital number, since it uses as much as digits as its factorization.

129804428867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12386304, while the sum is 59.

The spelling of 129804428867 in words is "one hundred twenty-nine billion, eight hundred four million, four hundred twenty-eight thousand, eight hundred sixty-seven".