26746115689 has 2 divisors, whose sum is σ = 26746115690. Its totient is φ = 26746115688.

The previous prime is 26746115687. The next prime is 26746115699. The reversal of 26746115689 is 98651164762.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26064488025 + 681627664 = 161445^2 + 26108^2 .

It is a cyclic number.

It is not a de Polignac number, because 26746115689 - 2¹ = 26746115687 is a prime.

Together with 26746115687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26746115687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13373057844 + 13373057845.

It is an arithmetic number, because the mean of its divisors is an integer number (13373057845).

Almost surely, 2^26746115689 is an apocalyptic number.

It is an amenable number.

26746115689 is a deficient number, since it is larger than the sum of its proper divisors (1).

26746115689 is an equidigital number, since it uses as much as digits as its factorization.

26746115689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 55.

The spelling of 26746115689 in words is "twenty-six billion, seven hundred forty-six million, one hundred fifteen thousand, six hundred eighty-nine".