16688063466 has 48 divisors (see below), whose sum is σ = 36885873960. Its totient is φ = 5450889600.

The previous prime is 16688063453. The next prime is 16688063467. The reversal of 16688063466 is 66436088661.

It can be written as a sum of positive squares in 4 ways, for example, as 14367618225 + 2320445241 = 119865^2 + 48171^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16688063467) 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, 780316 + ... + 801416.

Almost surely, 2^16688063466 is an apocalyptic number.

16688063466 is an abundant number, since it is smaller than the sum of its proper divisors (20197810494).

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

16688063466 is a wasteful number, since it uses less digits than its factorization.

16688063466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21991 (or 21988 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 54.

The spelling of 16688063466 in words is "sixteen billion, six hundred eighty-eight million, sixty-three thousand, four hundred sixty-six".