12009042650 has 24 divisors (see below), whose sum is σ = 24367440384. Its totient is φ = 4366924400.

The previous prime is 12009042631. The next prime is 12009042671. The reversal of 12009042650 is 5624090021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10916762 + ... + 10917861.

It is an arithmetic number, because the mean of its divisors is an integer number (1015310016).

Almost surely, 2^12009042650 is an apocalyptic number.

12009042650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12009042650 is an abundant number, since it is smaller than the sum of its proper divisors (12358397734).

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

12009042650 is a wasteful number, since it uses less digits than its factorization.

12009042650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21834646 (or 21834641 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 12009042650 in words is "twelve billion, nine million, forty-two thousand, six hundred fifty".