12662891959 has 2 divisors, whose sum is σ = 12662891960. Its totient is φ = 12662891958.

The previous prime is 12662891947. The next prime is 12662891999. The reversal of 12662891959 is 95919826621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12662891959 - 2⁹ = 12662891447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12662891999) 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, 6331445979 + 6331445980.

It is an arithmetic number, because the mean of its divisors is an integer number (6331445980).

Almost surely, 2^12662891959 is an apocalyptic number.

12662891959 is a deficient number, since it is larger than the sum of its proper divisors (1).

12662891959 is an equidigital number, since it uses as much as digits as its factorization.

12662891959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 58.

The spelling of 12662891959 in words is "twelve billion, six hundred sixty-two million, eight hundred ninety-one thousand, nine hundred fifty-nine".