66548284566 has 16 divisors (see below), whose sum is σ = 133170084288. Its totient is φ = 22170509000.

The previous prime is 66548284559. The next prime is 66548284577.

66548284566 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, 3051360 + ... + 3073091.

It is an arithmetic number, because the mean of its divisors is an integer number (8323130268).

Almost surely, 2^66548284566 is an apocalyptic number.

66548284566 is an abundant number, since it is smaller than the sum of its proper divisors (66621799722).

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

66548284566 is a wasteful number, since it uses less digits than its factorization.

66548284566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126267.

The product of its digits is 66355200, while the sum is 60.

The spelling of 66548284566 in words is "sixty-six billion, five hundred forty-eight million, two hundred eighty-four thousand, five hundred sixty-six".