66568486566 has 64 divisors (see below), whose sum is σ = 141734292480. Its totient is φ = 20808103680.

The previous prime is 66568486561. The next prime is 66568486571.

66568486566 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (66568486561) and next prime (66568486571).

It is a junction number, because it is equal to n+sod(n) for n = 66568486497 and 66568486506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66568486561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1040250 + ... + 1102386.

It is an arithmetic number, because the mean of its divisors is an integer number (2214598320).

Almost surely, 2^66568486566 is an apocalyptic number.

66568486566 is an abundant number, since it is smaller than the sum of its proper divisors (75165805914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66568486566 is a wasteful number, since it uses less digits than its factorization.

66568486566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62349.

The product of its digits is 298598400, while the sum is 66.

The spelling of 66568486566 in words is "sixty-six billion, five hundred sixty-eight million, four hundred eighty-six thousand, five hundred sixty-six".