566285143681 has 4 divisors (see below), whose sum is σ = 566291366212. Its totient is φ = 566278921152.

The previous prime is 566285143657. The next prime is 566285143703. The reversal of 566285143681 is 186341582665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 423854383681 + 142430760000 = 651041^2 + 377400^2 .

It is a cyclic number.

It is not a de Polignac number, because 566285143681 - 2⁷ = 566285143553 is a prime.

It is a super-2 number, since 2×566285143681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566285143601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2972700 + ... + 3157453.

It is an arithmetic number, because the mean of its divisors is an integer number (141572841553).

Almost surely, 2^566285143681 is an apocalyptic number.

It is an amenable number.

566285143681 is a deficient number, since it is larger than the sum of its proper divisors (6222531).

566285143681 is an equidigital number, since it uses as much as digits as its factorization.

566285143681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6222530.

The product of its digits is 8294400, while the sum is 55.

The spelling of 566285143681 in words is "five hundred sixty-six billion, two hundred eighty-five million, one hundred forty-three thousand, six hundred eighty-one".