5565550660001 has 2 divisors, whose sum is σ = 5565550660002. Its totient is φ = 5565550660000.

The previous prime is 5565550659989. The next prime is 5565550660003. The reversal of 5565550660001 is 1000660555655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2796068901025 + 2769481758976 = 1672145^2 + 1664176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5565550660001 is a prime.

Together with 5565550660003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5565550660003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2782775330000 + 2782775330001.

It is an arithmetic number, because the mean of its divisors is an integer number (2782775330001).

Almost surely, 2^{5565550660001} is an apocalyptic number.

It is an amenable number.

5565550660001 is a deficient number, since it is larger than the sum of its proper divisors (1).

5565550660001 is an equidigital number, since it uses as much as digits as its factorization.

5565550660001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 5565550660001 in words is "five trillion, five hundred sixty-five billion, five hundred fifty million, six hundred sixty thousand, one".