12655663123 has 2 divisors, whose sum is σ = 12655663124. Its totient is φ = 12655663122.

The previous prime is 12655663081. The next prime is 12655663159. The reversal of 12655663123 is 32136655621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12655663123 - 2¹⁷ = 12655532051 is a prime.

It is a super-2 number, since 2×12655663123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12655660123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327831561 + 6327831562.

It is an arithmetic number, because the mean of its divisors is an integer number (6327831562).

Almost surely, 2^12655663123 is an apocalyptic number.

12655663123 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655663123 is an equidigital number, since it uses as much as digits as its factorization.

12655663123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 40.

The spelling of 12655663123 in words is "twelve billion, six hundred fifty-five million, six hundred sixty-three thousand, one hundred twenty-three".