12628967666 has 24 divisors (see below), whose sum is σ = 22135115520. Its totient is φ = 5388134472.

The previous prime is 12628967653. The next prime is 12628967693. The reversal of 12628967666 is 66676982621.

It is a happy number.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 267086 + ... + 310793.

It is an arithmetic number, because the mean of its divisors is an integer number (922296480).

Almost surely, 2^12628967666 is an apocalyptic number.

12628967666 is a deficient number, since it is larger than the sum of its proper divisors (9506147854).

12628967666 is a wasteful number, since it uses less digits than its factorization.

12628967666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578118 (or 578111 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 59.

The spelling of 12628967666 in words is "twelve billion, six hundred twenty-eight million, nine hundred sixty-seven thousand, six hundred sixty-six".