12686948289 has 12 divisors (see below), whose sum is σ = 18493718100. Its totient is φ = 8380368864.

The previous prime is 12686948233. The next prime is 12686948321. The reversal of 12686948289 is 98284968621.

12686948289 is a `hidden beast` number, since 1 + 268 + 6 + 94 + 8 + 289 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4253648400 + 8433299889 = 65220^2 + 91833^2 .

It is not a de Polignac number, because 12686948289 - 2¹¹ = 12686946241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12686948789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6465354 + ... + 6467315.

It is an arithmetic number, because the mean of its divisors is an integer number (1541143175).

Almost surely, 2^12686948289 is an apocalyptic number.

It is an amenable number.

12686948289 is a deficient number, since it is larger than the sum of its proper divisors (5806769811).

12686948289 is a wasteful number, since it uses less digits than its factorization.

12686948289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12932784 (or 12932781 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The spelling of 12686948289 in words is "twelve billion, six hundred eighty-six million, nine hundred forty-eight thousand, two hundred eighty-nine".