12990662423 has 2 divisors, whose sum is σ = 12990662424. Its totient is φ = 12990662422.

The previous prime is 12990662383. The next prime is 12990662441. The reversal of 12990662423 is 32426609921.

12990662423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12990662423 - 2⁶ = 12990662359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12990662473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6495331211 + 6495331212.

It is an arithmetic number, because the mean of its divisors is an integer number (6495331212).

Almost surely, 2^12990662423 is an apocalyptic number.

12990662423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12990662423 is an equidigital number, since it uses as much as digits as its factorization.

12990662423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 44.

The spelling of 12990662423 in words is "twelve billion, nine hundred ninety million, six hundred sixty-two thousand, four hundred twenty-three".