5666516061551 has 2 divisors, whose sum is σ = 5666516061552. Its totient is φ = 5666516061550.

The previous prime is 5666516061533. The next prime is 5666516061571. The reversal of 5666516061551 is 1551606156665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5666516061551 - 2³⁰ = 5665442319727 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 5666516061493 and 5666516061502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5666516061571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833258030775 + 2833258030776.

It is an arithmetic number, because the mean of its divisors is an integer number (2833258030776).

Almost surely, 2^{5666516061551} is an apocalyptic number.

5666516061551 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666516061551 is an equidigital number, since it uses as much as digits as its factorization.

5666516061551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 5666516061551 in words is "five trillion, six hundred sixty-six billion, five hundred sixteen million, sixty-one thousand, five hundred fifty-one".