12720066036 has 12 divisors (see below), whose sum is σ = 29680154112. Its totient is φ = 4240022008.

The previous prime is 12720066019. The next prime is 12720066049. The reversal of 12720066036 is 63066002721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12720065988 and 12720066006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530002740 + ... + 530002763.

It is an arithmetic number, because the mean of its divisors is an integer number (2473346176).

Almost surely, 2^12720066036 is an apocalyptic number.

It is an amenable number.

12720066036 is an abundant number, since it is smaller than the sum of its proper divisors (16960088076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12720066036 is a wasteful number, since it uses less digits than its factorization.

12720066036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060005510 (or 1060005508 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

Adding to 12720066036 its reverse (63066002721), we get a palindrome (75786068757).

The spelling of 12720066036 in words is "twelve billion, seven hundred twenty million, sixty-six thousand, thirty-six".