5661660044 has 24 divisors (see below), whose sum is σ = 10144854720. Its totient is φ = 2763441536.

The previous prime is 5661659999. The next prime is 5661660073. The reversal of 5661660044 is 4400661665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34424 + ... + 111840.

It is an arithmetic number, because the mean of its divisors is an integer number (422702280).

Almost surely, 2^5661660044 is an apocalyptic number.

It is an amenable number.

5661660044 is a deficient number, since it is larger than the sum of its proper divisors (4483194676).

5661660044 is a wasteful number, since it uses less digits than its factorization.

5661660044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77857 (or 77855 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 5661660044 is about 75244.0033756844. The cubic root of 5661660044 is about 1782.3018702651.

The spelling of 5661660044 in words is "five billion, six hundred sixty-one million, six hundred sixty thousand, forty-four".