566138117985 has 32 divisors (see below), whose sum is σ = 1020044759040. Its totient is φ = 265636651200.

The previous prime is 566138117957. The next prime is 566138118011. The reversal of 566138117985 is 589711831665.

It is a happy number.

It is not a de Polignac number, because 566138117985 - 2⁵ = 566138117953 is a prime.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 55335855 + ... + 55346084.

It is an arithmetic number, because the mean of its divisors is an integer number (31876398720).

Almost surely, 2^566138117985 is an apocalyptic number.

566138117985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

566138117985 is a deficient number, since it is larger than the sum of its proper divisors (453906641055).

566138117985 is a wasteful number, since it uses less digits than its factorization.

566138117985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110681989.

The product of its digits is 10886400, while the sum is 60.

The spelling of 566138117985 in words is "five hundred sixty-six billion, one hundred thirty-eight million, one hundred seventeen thousand, nine hundred eighty-five".