566724055621 has 2 divisors, whose sum is σ = 566724055622. Its totient is φ = 566724055620.

The previous prime is 566724055517. The next prime is 566724055627. The reversal of 566724055621 is 126550427665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564925108225 + 1798947396 = 751615^2 + 42414^2 .

It is a cyclic number.

It is not a de Polignac number, because 566724055621 - 2¹³ = 566724047429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566724055627) 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, 283362027810 + 283362027811.

It is an arithmetic number, because the mean of its divisors is an integer number (283362027811).

Almost surely, 2^566724055621 is an apocalyptic number.

It is an amenable number.

566724055621 is a deficient number, since it is larger than the sum of its proper divisors (1).

566724055621 is an equidigital number, since it uses as much as digits as its factorization.

566724055621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 566724055621 in words is "five hundred sixty-six billion, seven hundred twenty-four million, fifty-five thousand, six hundred twenty-one".