26176809161 has 2 divisors, whose sum is σ = 26176809162. Its totient is φ = 26176809160.

The previous prime is 26176809137. The next prime is 26176809179. The reversal of 26176809161 is 16190867162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15084506761 + 11092302400 = 122819^2 + 105320^2 .

It is a cyclic number.

It is not a de Polignac number, because 26176809161 - 2²² = 26172614857 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 (26176809121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13088404580 + 13088404581.

It is an arithmetic number, because the mean of its divisors is an integer number (13088404581).

Almost surely, 2^26176809161 is an apocalyptic number.

It is an amenable number.

26176809161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26176809161 is an equidigital number, since it uses as much as digits as its factorization.

26176809161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 26176809161 in words is "twenty-six billion, one hundred seventy-six million, eight hundred nine thousand, one hundred sixty-one".