66284248266 has 32 divisors (see below), whose sum is σ = 147358526400. Its totient is φ = 22085719920.

The previous prime is 66284248249. The next prime is 66284248271.

66284248266 is a `hidden beast` number, since 6 + 62 + 8 + 42 + 482 + 66 = 666.

66284248266 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116805 + ... + 382376.

It is an arithmetic number, because the mean of its divisors is an integer number (4604953950).

Almost surely, 2^66284248266 is an apocalyptic number.

66284248266 is an abundant number, since it is smaller than the sum of its proper divisors (81074278134).

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

66284248266 is a wasteful number, since it uses less digits than its factorization.

66284248266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501651 (or 501645 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 54.

The spelling of 66284248266 in words is "sixty-six billion, two hundred eighty-four million, two hundred forty-eight thousand, two hundred sixty-six".