16655566650 has 48 divisors (see below), whose sum is σ = 42422192544. Its totient is φ = 4321442880.

The previous prime is 16655566639. The next prime is 16655566651. The reversal of 16655566650 is 5666555661.

It is a junction number, because it is equal to n+sod(n) for n = 16655566593 and 16655566602.

It is not an unprimeable number, because it can be changed into a prime (16655566651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1494952 + ... + 1506051.

It is an arithmetic number, because the mean of its divisors is an integer number (883795678).

Almost surely, 2^16655566650 is an apocalyptic number.

16655566650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16655566650 is an abundant number, since it is smaller than the sum of its proper divisors (25766625894).

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

16655566650 is a wasteful number, since it uses less digits than its factorization.

16655566650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001055 (or 3001050 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 16655566650 in words is "sixteen billion, six hundred fifty-five million, five hundred sixty-six thousand, six hundred fifty".