16661635244 has 12 divisors (see below), whose sum is σ = 29217249768. Its totient is φ = 8313849600.

The previous prime is 16661635189. The next prime is 16661635261. The reversal of 16661635244 is 44253616661.

It is a super-2 number, since 2×16661635244² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16661635195 and 16661635204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4239797 + ... + 4243724.

It is an arithmetic number, because the mean of its divisors is an integer number (2434770814).

Almost surely, 2^16661635244 is an apocalyptic number.

It is an amenable number.

16661635244 is a deficient number, since it is larger than the sum of its proper divisors (12555614524).

16661635244 is a wasteful number, since it uses less digits than its factorization.

16661635244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8484016 (or 8484014 counting only the distinct ones).

The product of its digits is 622080, while the sum is 44.

The spelling of 16661635244 in words is "sixteen billion, six hundred sixty-one million, six hundred thirty-five thousand, two hundred forty-four".