5660511665161 has 2 divisors, whose sum is σ = 5660511665162. Its totient is φ = 5660511665160.

The previous prime is 5660511665147. The next prime is 5660511665233. The reversal of 5660511665161 is 1615661150665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5544541449225 + 115970215936 = 2354685^2 + 340544^2 .

It is a cyclic number.

It is not a de Polignac number, because 5660511665161 - 2¹⁵ = 5660511632393 is a prime.

It is a super-2 number, since 2×5660511665161² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5660511665101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830255832580 + 2830255832581.

It is an arithmetic number, because the mean of its divisors is an integer number (2830255832581).

Almost surely, 2^{5660511665161} is an apocalyptic number.

It is an amenable number.

5660511665161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5660511665161 is an equidigital number, since it uses as much as digits as its factorization.

5660511665161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 5660511665161 in words is "five trillion, six hundred sixty billion, five hundred eleven million, six hundred sixty-five thousand, one hundred sixty-one".