12889556873 has 2 divisors, whose sum is σ = 12889556874. Its totient is φ = 12889556872.

The previous prime is 12889556843. The next prime is 12889556923. The reversal of 12889556873 is 37865598821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12867952969 + 21603904 = 113437^2 + 4648^2 .

It is a cyclic number.

It is not a de Polignac number, because 12889556873 - 2¹⁶ = 12889491337 is a prime.

It is a super-2 number, since 2×12889556873² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12889556843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6444778436 + 6444778437.

It is an arithmetic number, because the mean of its divisors is an integer number (6444778437).

Almost surely, 2^12889556873 is an apocalyptic number.

It is an amenable number.

12889556873 is a deficient number, since it is larger than the sum of its proper divisors (1).

12889556873 is an equidigital number, since it uses as much as digits as its factorization.

12889556873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29030400, while the sum is 62.

The spelling of 12889556873 in words is "twelve billion, eight hundred eighty-nine million, five hundred fifty-six thousand, eight hundred seventy-three".