566739221881 has 48 divisors (see below), whose sum is σ = 718286184000. Its totient is φ = 444098712960.

The previous prime is 566739221837. The next prime is 566739221921. The reversal of 566739221881 is 188122937665.

It is not a de Polignac number, because 566739221881 - 2¹¹ = 566739219833 is a prime.

It is a super-2 number, since 2×566739221881² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (566739221281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62336146 + ... + 62345236.

It is an arithmetic number, because the mean of its divisors is an integer number (14964295500).

Almost surely, 2^566739221881 is an apocalyptic number.

It is an amenable number.

566739221881 is a deficient number, since it is larger than the sum of its proper divisors (151546962119).

566739221881 is a wasteful number, since it uses less digits than its factorization.

566739221881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11462 (or 11455 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The spelling of 566739221881 in words is "five hundred sixty-six billion, seven hundred thirty-nine million, two hundred twenty-one thousand, eight hundred eighty-one".