26768230947697 has 2 divisors, whose sum is σ = 26768230947698. Its totient is φ = 26768230947696.

The previous prime is 26768230947649. The next prime is 26768230947713. The reversal of 26768230947697 is 79674903286762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21025517158881 + 5742713788816 = 4585359^2 + 2396396^2 .

It is a cyclic number.

It is not a de Polignac number, because 26768230947697 - 2⁷ = 26768230947569 is a prime.

It is not a weakly prime, because it can be changed into another prime (26768230947607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13384115473848 + 13384115473849.

It is an arithmetic number, because the mean of its divisors is an integer number (13384115473849).

Almost surely, 2^{26768230947697} is an apocalyptic number.

It is an amenable number.

26768230947697 is a deficient number, since it is larger than the sum of its proper divisors (1).

26768230947697 is an equidigital number, since it uses as much as digits as its factorization.

26768230947697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304433152, while the sum is 76.

The spelling of 26768230947697 in words is "twenty-six trillion, seven hundred sixty-eight billion, two hundred thirty million, nine hundred forty-seven thousand, six hundred ninety-seven".