26000027689 has 2 divisors, whose sum is σ = 26000027690. Its totient is φ = 26000027688.

The previous prime is 26000027663. The next prime is 26000027707. The reversal of 26000027689 is 98672000062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23963040000 + 2036987689 = 154800^2 + 45133^2 .

It is a cyclic number.

It is not a de Polignac number, because 26000027689 - 2⁵ = 26000027657 is a prime.

It is not a weakly prime, because it can be changed into another prime (26000027789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13000013844 + 13000013845.

It is an arithmetic number, because the mean of its divisors is an integer number (13000013845).

Almost surely, 2^26000027689 is an apocalyptic number.

It is an amenable number.

26000027689 is a deficient number, since it is larger than the sum of its proper divisors (1).

26000027689 is an equidigital number, since it uses as much as digits as its factorization.

26000027689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 26000027689 in words is "twenty-six billion, twenty-seven thousand, six hundred eighty-nine".