12456423667 has 2 divisors, whose sum is σ = 12456423668. Its totient is φ = 12456423666.

The previous prime is 12456423643. The next prime is 12456423773. The reversal of 12456423667 is 76632465421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12456423667 - 2²³ = 12448035059 is a prime.

It is not a weakly prime, because it can be changed into another prime (12456423167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228211833 + 6228211834.

It is an arithmetic number, because the mean of its divisors is an integer number (6228211834).

Almost surely, 2^12456423667 is an apocalyptic number.

12456423667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12456423667 is an equidigital number, since it uses as much as digits as its factorization.

12456423667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 46.

The spelling of 12456423667 in words is "twelve billion, four hundred fifty-six million, four hundred twenty-three thousand, six hundred sixty-seven".