12006646506 has 24 divisors (see below), whose sum is σ = 26043117984. Its totient is φ = 3997797480.

The previous prime is 12006646501. The next prime is 12006646523. The reversal of 12006646506 is 60564660021.

It is a happy number.

12006646506 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 6 + 646 + 5 + 0 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (12006646501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351390 + ... + 384041.

It is an arithmetic number, because the mean of its divisors is an integer number (1085129916).

Almost surely, 2^12006646506 is an apocalyptic number.

12006646506 is an abundant number, since it is smaller than the sum of its proper divisors (14036471478).

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

12006646506 is a wasteful number, since it uses less digits than its factorization.

12006646506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736346 (or 736343 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 12006646506 in words is "twelve billion, six million, six hundred forty-six thousand, five hundred six".