16865116650 has 48 divisors (see below), whose sum is σ = 46472769600. Its totient is φ = 4497364080.

The previous prime is 16865116627. The next prime is 16865116687. The reversal of 16865116650 is 5661156861.

16865116650 is a `hidden beast` number, since 1 + 6 + 86 + 511 + 6 + 6 + 50 = 666.

16865116650 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16865116596 and 16865116605.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6244990 + ... + 6247689.

It is an arithmetic number, because the mean of its divisors is an integer number (968182700).

Almost surely, 2^16865116650 is an apocalyptic number.

16865116650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16865116650 is an abundant number, since it is smaller than the sum of its proper divisors (29607652950).

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

16865116650 is a wasteful number, since it uses less digits than its factorization.

16865116650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492700 (or 12492689 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 16865116650 in words is "sixteen billion, eight hundred sixty-five million, one hundred sixteen thousand, six hundred fifty".