5661012216 has 16 divisors (see below), whose sum is σ = 14152530600. Its totient is φ = 1887004064.

The previous prime is 5661012187. The next prime is 5661012239. The reversal of 5661012216 is 6122101665.

It is a congruent number.

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, 117937731 + ... + 117937778.

Almost surely, 2^5661012216 is an apocalyptic number.

It is an amenable number.

5661012216 is an abundant number, since it is smaller than the sum of its proper divisors (8491518384).

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

5661012216 is a wasteful number, since it uses less digits than its factorization.

5661012216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235875518 (or 235875514 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 5661012216 is about 75239.6984044992. The cubic root of 5661012216 is about 1782.2338884901.

The spelling of 5661012216 in words is "five billion, six hundred sixty-one million, twelve thousand, two hundred sixteen".