12689024897 has 2 divisors, whose sum is σ = 12689024898. Its totient is φ = 12689024896.

The previous prime is 12689024869. The next prime is 12689024939. The reversal of 12689024897 is 79842098621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7955034481 + 4733990416 = 89191^2 + 68804^2 .

It is a cyclic number.

It is not a de Polignac number, because 12689024897 - 2³² = 8394057601 is a prime.

It is a super-2 number, since 2×12689024897² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12689024837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6344512448 + 6344512449.

It is an arithmetic number, because the mean of its divisors is an integer number (6344512449).

Almost surely, 2^12689024897 is an apocalyptic number.

It is an amenable number.

12689024897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12689024897 is an equidigital number, since it uses as much as digits as its factorization.

12689024897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 12689024897 in words is "twelve billion, six hundred eighty-nine million, twenty-four thousand, eight hundred ninety-seven".