26944567861 has 2 divisors, whose sum is σ = 26944567862. Its totient is φ = 26944567860.

The previous prime is 26944567829. The next prime is 26944567883. The reversal of 26944567861 is 16876544962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17650451025 + 9294116836 = 132855^2 + 96406^2 .

It is a cyclic number.

It is not a de Polignac number, because 26944567861 - 2⁵ = 26944567829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26944567796 and 26944567805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26944567891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13472283930 + 13472283931.

It is an arithmetic number, because the mean of its divisors is an integer number (13472283931).

Almost surely, 2^26944567861 is an apocalyptic number.

It is an amenable number.

26944567861 is a deficient number, since it is larger than the sum of its proper divisors (1).

26944567861 is an equidigital number, since it uses as much as digits as its factorization.

26944567861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 58.

The spelling of 26944567861 in words is "twenty-six billion, nine hundred forty-four million, five hundred sixty-seven thousand, eight hundred sixty-one".