26834392217 has 2 divisors, whose sum is σ = 26834392218. Its totient is φ = 26834392216.

The previous prime is 26834392187. The next prime is 26834392231. The reversal of 26834392217 is 71229343862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22378963216 + 4455429001 = 149596^2 + 66749^2 .

It is a cyclic number.

It is not a de Polignac number, because 26834392217 - 2¹⁰ = 26834391193 is a prime.

It is not a weakly prime, because it can be changed into another prime (26834392517) 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, 13417196108 + 13417196109.

It is an arithmetic number, because the mean of its divisors is an integer number (13417196109).

Almost surely, 2^26834392217 is an apocalyptic number.

It is an amenable number.

26834392217 is a deficient number, since it is larger than the sum of its proper divisors (1).

26834392217 is an equidigital number, since it uses as much as digits as its factorization.

26834392217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 47.

The spelling of 26834392217 in words is "twenty-six billion, eight hundred thirty-four million, three hundred ninety-two thousand, two hundred seventeen".