12626632666 has 32 divisors (see below), whose sum is σ = 21119607360. Its totient is φ = 5626526976.

The previous prime is 12626632663. The next prime is 12626632729. The reversal of 12626632666 is 66623662621.

It is not an unprimeable number, because it can be changed into a prime (12626632663) 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, 2055736 + ... + 2061868.

It is an arithmetic number, because the mean of its divisors is an integer number (659987730).

Almost surely, 2^12626632666 is an apocalyptic number.

12626632666 is a deficient number, since it is larger than the sum of its proper divisors (8492974694).

12626632666 is a wasteful number, since it uses less digits than its factorization.

12626632666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9358.

The product of its digits is 1119744, while the sum is 46.

The spelling of 12626632666 in words is "twelve billion, six hundred twenty-six million, six hundred thirty-two thousand, six hundred sixty-six".