12891641389 has 16 divisors (see below), whose sum is σ = 14137066944. Its totient is φ = 11658556800.

The previous prime is 12891641311. The next prime is 12891641393. The reversal of 12891641389 is 98314619821.

It is not a de Polignac number, because 12891641389 - 2⁷ = 12891641261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891641689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4337674 + ... + 4340644.

It is an arithmetic number, because the mean of its divisors is an integer number (883566684).

Almost surely, 2^12891641389 is an apocalyptic number.

It is an amenable number.

12891641389 is a deficient number, since it is larger than the sum of its proper divisors (1245425555).

12891641389 is a wasteful number, since it uses less digits than its factorization.

12891641389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908.

The product of its digits is 746496, while the sum is 52.

The spelling of 12891641389 in words is "twelve billion, eight hundred ninety-one million, six hundred forty-one thousand, three hundred eighty-nine".