12686001109 has 2 divisors, whose sum is σ = 12686001110. Its totient is φ = 12686001108.

The previous prime is 12686001067. The next prime is 12686001131. The reversal of 12686001109 is 90110068621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12478007025 + 207994084 = 111705^2 + 14422^2 .

It is a cyclic number.

It is not a de Polignac number, because 12686001109 - 2¹⁵ = 12685968341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12686001709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6343000554 + 6343000555.

It is an arithmetic number, because the mean of its divisors is an integer number (6343000555).

Almost surely, 2^12686001109 is an apocalyptic number.

It is an amenable number.

12686001109 is a deficient number, since it is larger than the sum of its proper divisors (1).

12686001109 is an equidigital number, since it uses as much as digits as its factorization.

12686001109 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 34.

The spelling of 12686001109 in words is "twelve billion, six hundred eighty-six million, one thousand, one hundred nine".