26454369857 has 2 divisors, whose sum is σ = 26454369858. Its totient is φ = 26454369856.

The previous prime is 26454369833. The next prime is 26454369859. The reversal of 26454369857 is 75896345462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25396884496 + 1057485361 = 159364^2 + 32519^2 .

It is a cyclic number.

It is not a de Polignac number, because 26454369857 - 2¹⁰ = 26454368833 is a prime.

Together with 26454369859, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 26454369796 and 26454369805.

It is not a weakly prime, because it can be changed into another prime (26454369859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13227184928 + 13227184929.

It is an arithmetic number, because the mean of its divisors is an integer number (13227184929).

Almost surely, 2^26454369857 is an apocalyptic number.

It is an amenable number.

26454369857 is a deficient number, since it is larger than the sum of its proper divisors (1).

26454369857 is an equidigital number, since it uses as much as digits as its factorization.

26454369857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43545600, while the sum is 59.

The spelling of 26454369857 in words is "twenty-six billion, four hundred fifty-four million, three hundred sixty-nine thousand, eight hundred fifty-seven".