66266866266 has 32 divisors (see below), whose sum is σ = 137276173440. Its totient is φ = 21300463296.

The previous prime is 66266866261. The next prime is 66266866279.

66266866266 is nontrivially palindromic in base 10.

66266866266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (66266866261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100246 + ... + 377601.

It is an arithmetic number, because the mean of its divisors is an integer number (4289880420).

Almost surely, 2^66266866266 is an apocalyptic number.

66266866266 is an abundant number, since it is smaller than the sum of its proper divisors (71009307174).

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

66266866266 is a wasteful number, since it uses less digits than its factorization.

66266866266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478678.

The product of its digits is 53747712, while the sum is 60.

The spelling of 66266866266 in words is "sixty-six billion, two hundred sixty-six million, eight hundred sixty-six thousand, two hundred sixty-six".