16661482044 has 48 divisors (see below), whose sum is σ = 39679180800. Its totient is φ = 5440309056.

The previous prime is 16661482039. The next prime is 16661482073. The reversal of 16661482044 is 44028416661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 16661481987 and 16661482005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51202 + ... + 189590.

It is an arithmetic number, because the mean of its divisors is an integer number (826649600).

Almost surely, 2^16661482044 is an apocalyptic number.

It is an amenable number.

16661482044 is an abundant number, since it is smaller than the sum of its proper divisors (23017698756).

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

16661482044 is a wasteful number, since it uses less digits than its factorization.

16661482044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138602 (or 138600 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 16661482044 in words is "sixteen billion, six hundred sixty-one million, four hundred eighty-two thousand, forty-four".