26517220811 has 2 divisors, whose sum is σ = 26517220812. Its totient is φ = 26517220810.

The previous prime is 26517220759. The next prime is 26517220831. The reversal of 26517220811 is 11802271562.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26517220811 - 2⁶ = 26517220747 is a prime.

It is not a weakly prime, because it can be changed into another prime (26517220831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13258610405 + 13258610406.

It is an arithmetic number, because the mean of its divisors is an integer number (13258610406).

Almost surely, 2^26517220811 is an apocalyptic number.

26517220811 is a deficient number, since it is larger than the sum of its proper divisors (1).

26517220811 is an equidigital number, since it uses as much as digits as its factorization.

26517220811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The spelling of 26517220811 in words is "twenty-six billion, five hundred seventeen million, two hundred twenty thousand, eight hundred eleven".