12689087423 has 2 divisors, whose sum is σ = 12689087424. Its totient is φ = 12689087422.

The previous prime is 12689087413. The next prime is 12689087459. The reversal of 12689087423 is 32478098621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12689087423 - 2⁴ = 12689087407 is a prime.

It is a super-2 number, since 2×12689087423² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12689087413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344543711 + 6344543712.

It is an arithmetic number, because the mean of its divisors is an integer number (6344543712).

Almost surely, 2^12689087423 is an apocalyptic number.

12689087423 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689087423 is an equidigital number, since it uses as much as digits as its factorization.

12689087423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 12689087423 in words is "twelve billion, six hundred eighty-nine million, eighty-seven thousand, four hundred twenty-three".