26442640339 has 2 divisors, whose sum is σ = 26442640340. Its totient is φ = 26442640338.

The previous prime is 26442640333. The next prime is 26442640349. The reversal of 26442640339 is 93304624462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26442640339 - 2³ = 26442640331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26442640295 and 26442640304.

It is not a weakly prime, because it can be changed into another prime (26442640331) 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, 13221320169 + 13221320170.

It is an arithmetic number, because the mean of its divisors is an integer number (13221320170).

Almost surely, 2^26442640339 is an apocalyptic number.

26442640339 is a deficient number, since it is larger than the sum of its proper divisors (1).

26442640339 is an equidigital number, since it uses as much as digits as its factorization.

26442640339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 26442640339 in words is "twenty-six billion, four hundred forty-two million, six hundred forty thousand, three hundred thirty-nine".