12016555650 has 72 divisors (see below), whose sum is σ = 35219446704. Its totient is φ = 2913103200.

The previous prime is 12016555633. The next prime is 12016555651. The reversal of 12016555650 is 5655561021.

It is not an unprimeable number, because it can be changed into a prime (12016555651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1208844 + ... + 1218743.

It is an arithmetic number, because the mean of its divisors is an integer number (489158982).

Almost surely, 2^12016555650 is an apocalyptic number.

12016555650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12016555650 is an abundant number, since it is smaller than the sum of its proper divisors (23202891054).

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

12016555650 is a wasteful number, since it uses less digits than its factorization.

12016555650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2427616 (or 2427608 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 12016555650 in words is "twelve billion, sixteen million, five hundred fifty-five thousand, six hundred fifty".