26731579673243 has 2 divisors, whose sum is σ = 26731579673244. Its totient is φ = 26731579673242.

The previous prime is 26731579673237. The next prime is 26731579673299. The reversal of 26731579673243 is 34237697513762.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26731579673243 - 2¹⁰ = 26731579672219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26731579673243.

It is not a weakly prime, because it can be changed into another prime (26731579673543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13365789836621 + 13365789836622.

It is an arithmetic number, because the mean of its divisors is an integer number (13365789836622).

Almost surely, 2^{26731579673243} is an apocalyptic number.

26731579673243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26731579673243 is an equidigital number, since it uses as much as digits as its factorization.

26731579673243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240045120, while the sum is 65.

The spelling of 26731579673243 in words is "twenty-six trillion, seven hundred thirty-one billion, five hundred seventy-nine million, six hundred seventy-three thousand, two hundred forty-three".