66542024566 has 16 divisors (see below), whose sum is σ = 101136911040. Its totient is φ = 32832559240.

The previous prime is 66542024543. The next prime is 66542024573.

66542024566 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 662536 + ... + 756331.

It is an arithmetic number, because the mean of its divisors is an integer number (6321056940).

Almost surely, 2^66542024566 is an apocalyptic number.

66542024566 is a deficient number, since it is larger than the sum of its proper divisors (34594886474).

66542024566 is a wasteful number, since it uses less digits than its factorization.

66542024566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419179.

The product of its (nonzero) digits is 2073600, while the sum is 46.

It can be divided in two parts, 665420 and 24566, that added together give a palindrome (689986).

The spelling of 66542024566 in words is "sixty-six billion, five hundred forty-two million, twenty-four thousand, five hundred sixty-six".