12628851566 has 8 divisors (see below), whose sum is σ = 19052776584. Its totient is φ = 6277926040.

The previous prime is 12628851563. The next prime is 12628851583. The reversal of 12628851566 is 66515882621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12628851563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18249440 + ... + 18250131.

It is an arithmetic number, because the mean of its divisors is an integer number (2381597073).

Almost surely, 2^12628851566 is an apocalyptic number.

12628851566 is a deficient number, since it is larger than the sum of its proper divisors (6423925018).

12628851566 is a wasteful number, since it uses less digits than its factorization.

12628851566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36499746.

The product of its digits is 1382400, while the sum is 50.

The spelling of 12628851566 in words is "twelve billion, six hundred twenty-eight million, eight hundred fifty-one thousand, five hundred sixty-six".