66245654266 has 48 divisors (see below), whose sum is σ = 111073939200. Its totient is φ = 29605273280.

The previous prime is 66245654243. The next prime is 66245654269.

66245654266 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (66245654269) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3846711 + ... + 3863893.

It is an arithmetic number, because the mean of its divisors is an integer number (2314040400).

Almost surely, 2^66245654266 is an apocalyptic number.

66245654266 is a deficient number, since it is larger than the sum of its proper divisors (44828284934).

66245654266 is a wasteful number, since it uses less digits than its factorization.

66245654266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17475 (or 17464 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 52.

The spelling of 66245654266 in words is "sixty-six billion, two hundred forty-five million, six hundred fifty-four thousand, two hundred sixty-six".