12659380891 has 2 divisors, whose sum is σ = 12659380892. Its totient is φ = 12659380890.

The previous prime is 12659380889. The next prime is 12659380913. The reversal of 12659380891 is 19808395621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12659380891 - 2¹ = 12659380889 is a prime.

Together with 12659380889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12659380091) 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 as a sum of consecutive naturals, namely, 6329690445 + 6329690446.

It is an arithmetic number, because the mean of its divisors is an integer number (6329690446).

Almost surely, 2^12659380891 is an apocalyptic number.

12659380891 is a deficient number, since it is larger than the sum of its proper divisors (1).

12659380891 is an equidigital number, since it uses as much as digits as its factorization.

12659380891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 12659380891 in words is "twelve billion, six hundred fifty-nine million, three hundred eighty thousand, eight hundred ninety-one".