5665660161161 has 32 divisors (see below), whose sum is σ = 7674359309568. Its totient is φ = 4039136317440.

The previous prime is 5665660161103. The next prime is 5665660161173. The reversal of 5665660161161 is 1611610665665.

It is not a de Polignac number, because 5665660161161 - 2³⁴ = 5648480291977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5665660161101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24931136 + ... + 25157361.

It is an arithmetic number, because the mean of its divisors is an integer number (239823728424).

Almost surely, 2^{5665660161161} is an apocalyptic number.

It is an amenable number.

5665660161161 is a deficient number, since it is larger than the sum of its proper divisors (2008699148407).

5665660161161 is a wasteful number, since it uses less digits than its factorization.

5665660161161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50088641.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 5665660161161 in words is "five trillion, six hundred sixty-five billion, six hundred sixty million, one hundred sixty-one thousand, one hundred sixty-one".