5665561049977 has 32 divisors (see below), whose sum is σ = 6157887840000. Its totient is φ = 5194285076736.

The previous prime is 5665561049921. The next prime is 5665561049989. The reversal of 5665561049977 is 7799401655665.

It is a cyclic number.

It is not a de Polignac number, because 5665561049977 - 2³⁹ = 5115805236089 is a prime.

It is a super-2 number, since 2×5665561049977² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5665561049077) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98145799 + ... + 98203507.

It is an arithmetic number, because the mean of its divisors is an integer number (192433995000).

Almost surely, 2^{5665561049977} is an apocalyptic number.

It is an amenable number.

5665561049977 is a deficient number, since it is larger than the sum of its proper divisors (492326790023).

5665561049977 is a wasteful number, since it uses less digits than its factorization.

5665561049977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58513.

The product of its (nonzero) digits is 428652000, while the sum is 70.

The spelling of 5665561049977 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, forty-nine thousand, nine hundred seventy-seven".