12006637789 has 2 divisors, whose sum is σ = 12006637790. Its totient is φ = 12006637788.

The previous prime is 12006637763. The next prime is 12006637823. The reversal of 12006637789 is 98773660021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11899100889 + 107536900 = 109083^2 + 10370^2 .

It is a cyclic number.

It is not a de Polignac number, because 12006637789 - 2¹⁵ = 12006605021 is a prime.

It is a super-3 number, since 3×12006637789³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12006637759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6003318894 + 6003318895.

It is an arithmetic number, because the mean of its divisors is an integer number (6003318895).

Almost surely, 2^12006637789 is an apocalyptic number.

It is an amenable number.

12006637789 is a deficient number, since it is larger than the sum of its proper divisors (1).

12006637789 is an equidigital number, since it uses as much as digits as its factorization.

12006637789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 12006637789 in words is "twelve billion, six million, six hundred thirty-seven thousand, seven hundred eighty-nine".