2600001111689 has 2 divisors, whose sum is σ = 2600001111690. Its totient is φ = 2600001111688.

The previous prime is 2600001111679. The next prime is 2600001111707. The reversal of 2600001111689 is 9861111000062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2040706532089 + 559294579600 = 1428533^2 + 747860^2 .

It is a cyclic number.

It is not a de Polignac number, because 2600001111689 - 2³⁶ = 2531281634953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2600001111679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1300000555844 + 1300000555845.

It is an arithmetic number, because the mean of its divisors is an integer number (1300000555845).

Almost surely, 2^{2600001111689} is an apocalyptic number.

It is an amenable number.

2600001111689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2600001111689 is an equidigital number, since it uses as much as digits as its factorization.

2600001111689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 2600001111689 in words is "two trillion, six hundred billion, one million, one hundred eleven thousand, six hundred eighty-nine".