26680194797 has 2 divisors, whose sum is σ = 26680194798. Its totient is φ = 26680194796.

The previous prime is 26680194679. The next prime is 26680194799. The reversal of 26680194797 is 79749108662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15776867236 + 10903327561 = 125606^2 + 104419^2 .

It is a cyclic number.

It is not a de Polignac number, because 26680194797 - 2¹⁰ = 26680193773 is a prime.

Together with 26680194799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26680194799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13340097398 + 13340097399.

It is an arithmetic number, because the mean of its divisors is an integer number (13340097399).

Almost surely, 2^26680194797 is an apocalyptic number.

It is an amenable number.

26680194797 is a deficient number, since it is larger than the sum of its proper divisors (1).

26680194797 is an equidigital number, since it uses as much as digits as its factorization.

26680194797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The spelling of 26680194797 in words is "twenty-six billion, six hundred eighty million, one hundred ninety-four thousand, seven hundred ninety-seven".