12869867149 has 2 divisors, whose sum is σ = 12869867150. Its totient is φ = 12869867148.

The previous prime is 12869867147. The next prime is 12869867177. The reversal of 12869867149 is 94176896821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12669078249 + 200788900 = 112557^2 + 14170^2 .

It is a cyclic number.

It is not a de Polignac number, because 12869867149 - 2¹ = 12869867147 is a prime.

Together with 12869867147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12869867147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6434933574 + 6434933575.

It is an arithmetic number, because the mean of its divisors is an integer number (6434933575).

Almost surely, 2^12869867149 is an apocalyptic number.

It is an amenable number.

12869867149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12869867149 is an equidigital number, since it uses as much as digits as its factorization.

12869867149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 61.

The spelling of 12869867149 in words is "twelve billion, eight hundred sixty-nine million, eight hundred sixty-seven thousand, one hundred forty-nine".