5661665015011 has 2 divisors, whose sum is σ = 5661665015012. Its totient is φ = 5661665015010.

The previous prime is 5661665014981. The next prime is 5661665015029. The reversal of 5661665015011 is 1105105661665.

5661665015011 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5661665015011 - 2¹⁷ = 5661664883939 is a prime.

It is not a weakly prime, because it can be changed into another prime (5661665012011) 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 as a sum of consecutive naturals, namely, 2830832507505 + 2830832507506.

It is an arithmetic number, because the mean of its divisors is an integer number (2830832507506).

Almost surely, 2^{5661665015011} is an apocalyptic number.

5661665015011 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661665015011 is an equidigital number, since it uses as much as digits as its factorization.

5661665015011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 5661665015011 in words is "five trillion, six hundred sixty-one billion, six hundred sixty-five million, fifteen thousand, eleven".