26539891723 has 2 divisors, whose sum is σ = 26539891724. Its totient is φ = 26539891722.

The previous prime is 26539891711. The next prime is 26539891817. The reversal of 26539891723 is 32719893562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26539891723 - 2⁹ = 26539891211 is a prime.

It is not a weakly prime, because it can be changed into another prime (26539891123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13269945861 + 13269945862.

It is an arithmetic number, because the mean of its divisors is an integer number (13269945862).

Almost surely, 2^26539891723 is an apocalyptic number.

26539891723 is a deficient number, since it is larger than the sum of its proper divisors (1).

26539891723 is an equidigital number, since it uses as much as digits as its factorization.

26539891723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 55.

The spelling of 26539891723 in words is "twenty-six billion, five hundred thirty-nine million, eight hundred ninety-one thousand, seven hundred twenty-three".