26786216893 has 2 divisors, whose sum is σ = 26786216894. Its totient is φ = 26786216892.

The previous prime is 26786216861. The next prime is 26786216909. The reversal of 26786216893 is 39861268762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26782304409 + 3912484 = 163653^2 + 1978^2 .

It is a cyclic number.

It is not a de Polignac number, because 26786216893 - 2⁵ = 26786216861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26786216803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13393108446 + 13393108447.

It is an arithmetic number, because the mean of its divisors is an integer number (13393108447).

Almost surely, 2^26786216893 is an apocalyptic number.

It is an amenable number.

26786216893 is a deficient number, since it is larger than the sum of its proper divisors (1).

26786216893 is an equidigital number, since it uses as much as digits as its factorization.

26786216893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 58.

The spelling of 26786216893 in words is "twenty-six billion, seven hundred eighty-six million, two hundred sixteen thousand, eight hundred ninety-three".