26861110443169 has 2 divisors, whose sum is σ = 26861110443170. Its totient is φ = 26861110443168.

The previous prime is 26861110443149. The next prime is 26861110443229. The reversal of 26861110443169 is 96134401116862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26572612548769 + 288497894400 = 5154863^2 + 537120^2 .

It is a cyclic number.

It is not a de Polignac number, because 26861110443169 - 2⁵ = 26861110443137 is a prime.

It is a super-2 number, since 2×26861110443169² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26861110443109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13430555221584 + 13430555221585.

It is an arithmetic number, because the mean of its divisors is an integer number (13430555221585).

Almost surely, 2^{26861110443169} is an apocalyptic number.

It is an amenable number.

26861110443169 is a deficient number, since it is larger than the sum of its proper divisors (1).

26861110443169 is an equidigital number, since it uses as much as digits as its factorization.

26861110443169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 26861110443169 in words is "twenty-six trillion, eight hundred sixty-one billion, one hundred ten million, four hundred forty-three thousand, one hundred sixty-nine".