26000866553 has 2 divisors, whose sum is σ = 26000866554. Its totient is φ = 26000866552.

The previous prime is 26000866531. The next prime is 26000866601. The reversal of 26000866553 is 35566800062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25866932224 + 133934329 = 160832^2 + 11573^2 .

It is a cyclic number.

It is not a de Polignac number, because 26000866553 - 2¹⁰ = 26000865529 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 26000866553.

It is not a weakly prime, because it can be changed into another prime (26000866513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13000433276 + 13000433277.

It is an arithmetic number, because the mean of its divisors is an integer number (13000433277).

Almost surely, 2^26000866553 is an apocalyptic number.

It is an amenable number.

26000866553 is a deficient number, since it is larger than the sum of its proper divisors (1).

26000866553 is an equidigital number, since it uses as much as digits as its factorization.

26000866553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 26000866553 in words is "twenty-six billion, eight hundred sixty-six thousand, five hundred fifty-three".