26026138393 has 2 divisors, whose sum is σ = 26026138394. Its totient is φ = 26026138392.

The previous prime is 26026138387. The next prime is 26026138447. The reversal of 26026138393 is 39383162062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26019948249 + 6190144 = 161307^2 + 2488^2 .

It is a cyclic number.

It is not a de Polignac number, because 26026138393 - 2⁵ = 26026138361 is a prime.

It is not a weakly prime, because it can be changed into another prime (26026138693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13013069196 + 13013069197.

It is an arithmetic number, because the mean of its divisors is an integer number (13013069197).

Almost surely, 2^26026138393 is an apocalyptic number.

It is an amenable number.

26026138393 is a deficient number, since it is larger than the sum of its proper divisors (1).

26026138393 is an equidigital number, since it uses as much as digits as its factorization.

26026138393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 26026138393 in words is "twenty-six billion, twenty-six million, one hundred thirty-eight thousand, three hundred ninety-three".