26905946442013 has 2 divisors, whose sum is σ = 26905946442014. Its totient is φ = 26905946442012.

The previous prime is 26905946441963. The next prime is 26905946442017. The reversal of 26905946442013 is 31024464950962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26900020829529 + 5925612484 = 5186523^2 + 76978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26905946442013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26905946442017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13452973221006 + 13452973221007.

It is an arithmetic number, because the mean of its divisors is an integer number (13452973221007).

Almost surely, 2^{26905946442013} is an apocalyptic number.

It is an amenable number.

26905946442013 is a deficient number, since it is larger than the sum of its proper divisors (1).

26905946442013 is an equidigital number, since it uses as much as digits as its factorization.

26905946442013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 55.

The spelling of 26905946442013 in words is "twenty-six trillion, nine hundred five billion, nine hundred forty-six million, four hundred forty-two thousand, thirteen".