26781793689611 has 2 divisors, whose sum is σ = 26781793689612. Its totient is φ = 26781793689610.

The previous prime is 26781793689479. The next prime is 26781793689647. The reversal of 26781793689611 is 11698639718762.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26781793689611 - 2²⁶ = 26781726580747 is a prime.

It is not a weakly prime, because it can be changed into another prime (26781793689661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13390896844805 + 13390896844806.

It is an arithmetic number, because the mean of its divisors is an integer number (13390896844806).

Almost surely, 2^{26781793689611} is an apocalyptic number.

26781793689611 is a deficient number, since it is larger than the sum of its proper divisors (1).

26781793689611 is an equidigital number, since it uses as much as digits as its factorization.

26781793689611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329204736, while the sum is 74.

The spelling of 26781793689611 in words is "twenty-six trillion, seven hundred eighty-one billion, seven hundred ninety-three million, six hundred eighty-nine thousand, six hundred eleven".