26109764129 has 2 divisors, whose sum is σ = 26109764130. Its totient is φ = 26109764128.

The previous prime is 26109764117. The next prime is 26109764173. The reversal of 26109764129 is 92146790162.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20945904529 + 5163859600 = 144727^2 + 71860^2 .

It is a cyclic number.

It is not a de Polignac number, because 26109764129 - 2⁴ = 26109764113 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 (26109764179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13054882064 + 13054882065.

It is an arithmetic number, because the mean of its divisors is an integer number (13054882065).

Almost surely, 2^26109764129 is an apocalyptic number.

It is an amenable number.

26109764129 is a deficient number, since it is larger than the sum of its proper divisors (1).

26109764129 is an equidigital number, since it uses as much as digits as its factorization.

26109764129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 26109764129 in words is "twenty-six billion, one hundred nine million, seven hundred sixty-four thousand, one hundred twenty-nine".