8276664666728 has 16 divisors (see below), whose sum is σ = 15518902954500. Its totient is φ = 4138290545536.

The previous prime is 8276664666671. The next prime is 8276664666749.

8276664666728 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 7522063199044 + 754601467684 = 2742638^2 + 868678^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4373573 + ... + 5973396.

Almost surely, 2^{8276664666728} is an apocalyptic number.

It is an amenable number.

8276664666728 is a deficient number, since it is larger than the sum of its proper divisors (7242238287772).

8276664666728 is a wasteful number, since it uses less digits than its factorization.

8276664666728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10446964 (or 10446960 counting only the distinct ones).

The product of its digits is 2341011456, while the sum is 74.

The spelling of 8276664666728 in words is "eight trillion, two hundred seventy-six billion, six hundred sixty-four million, six hundred sixty-six thousand, seven hundred twenty-eight".