26071163779081 has 2 divisors, whose sum is σ = 26071163779082. Its totient is φ = 26071163779080.

The previous prime is 26071163779079. The next prime is 26071163779093. The reversal of 26071163779081 is 18097736117062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22215281729481 + 3855882049600 = 4713309^2 + 1963640^2 .

It is a cyclic number.

It is not a de Polignac number, because 26071163779081 - 2¹ = 26071163779079 is a prime.

It is a super-2 number, since 2×26071163779081² (a number of 28 digits) contains 22 as substring.

Together with 26071163779079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26071163779061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13035581889540 + 13035581889541.

It is an arithmetic number, because the mean of its divisors is an integer number (13035581889541).

Almost surely, 2^{26071163779081} is an apocalyptic number.

It is an amenable number.

26071163779081 is a deficient number, since it is larger than the sum of its proper divisors (1).

26071163779081 is an equidigital number, since it uses as much as digits as its factorization.

26071163779081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 58.

The spelling of 26071163779081 in words is "twenty-six trillion, seventy-one billion, one hundred sixty-three million, seven hundred seventy-nine thousand, eighty-one".