6656110565977 has 8 divisors (see below), whose sum is σ = 6709234256136. Its totient is φ = 6603155256192.

The previous prime is 6656110565887. The next prime is 6656110565987. The reversal of 6656110565977 is 7795650116566.

It can be written as a sum of positive squares in 4 ways, for example, as 4675718600281 + 1980391965696 = 2162341^2 + 1407264^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6656110565977 - 2²⁷ = 6655976348249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6656110565987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42015718 + ... + 42173839.

It is an arithmetic number, because the mean of its divisors is an integer number (838654282017).

Almost surely, 2^{6656110565977} is an apocalyptic number.

It is an amenable number.

6656110565977 is a deficient number, since it is larger than the sum of its proper divisors (53123690159).

6656110565977 is a wasteful number, since it uses less digits than its factorization.

6656110565977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84190187.

The product of its (nonzero) digits is 71442000, while the sum is 64.

The spelling of 6656110565977 in words is "six trillion, six hundred fifty-six billion, one hundred ten million, five hundred sixty-five thousand, nine hundred seventy-seven".