5221160665657 has 2 divisors, whose sum is σ = 5221160665658. Its totient is φ = 5221160665656.

The previous prime is 5221160665621. The next prime is 5221160665661. The reversal of 5221160665657 is 7565660611225.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3945483032976 + 1275677632681 = 1986324^2 + 1129459^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221160665657 - 2¹⁹ = 5221160141369 is a prime.

It is not a weakly prime, because it can be changed into another prime (5221160665957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2610580332828 + 2610580332829.

It is an arithmetic number, because the mean of its divisors is an integer number (2610580332829).

Almost surely, 2^{5221160665657} is an apocalyptic number.

It is an amenable number.

5221160665657 is a deficient number, since it is larger than the sum of its proper divisors (1).

5221160665657 is an equidigital number, since it uses as much as digits as its factorization.

5221160665657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536000, while the sum is 52.

The spelling of 5221160665657 in words is "five trillion, two hundred twenty-one billion, one hundred sixty million, six hundred sixty-five thousand, six hundred fifty-seven".