12889556923 has 2 divisors, whose sum is σ = 12889556924. Its totient is φ = 12889556922.

The previous prime is 12889556873. The next prime is 12889556947. The reversal of 12889556923 is 32965598821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12889556923 - 2¹⁷ = 12889425851 is a prime.

It is a super-2 number, since 2×12889556923² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12889556963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444778461 + 6444778462.

It is an arithmetic number, because the mean of its divisors is an integer number (6444778462).

Almost surely, 2^12889556923 is an apocalyptic number.

12889556923 is a deficient number, since it is larger than the sum of its proper divisors (1).

12889556923 is an equidigital number, since it uses as much as digits as its factorization.

12889556923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9331200, while the sum is 58.

The spelling of 12889556923 in words is "twelve billion, eight hundred eighty-nine million, five hundred fifty-six thousand, nine hundred twenty-three".