12278574566 has 8 divisors (see below), whose sum is σ = 18418588704. Its totient is φ = 6139045000.

The previous prime is 12278574521. The next prime is 12278574629. The reversal of 12278574566 is 66547587221.

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

It is a congruent number.

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, 49265 + ... + 164268.

It is an arithmetic number, because the mean of its divisors is an integer number (2302323588).

Almost surely, 2^12278574566 is an apocalyptic number.

12278574566 is a deficient number, since it is larger than the sum of its proper divisors (6140014138).

12278574566 is a wasteful number, since it uses less digits than its factorization.

12278574566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242286.

The product of its digits is 5644800, while the sum is 53.

The spelling of 12278574566 in words is "twelve billion, two hundred seventy-eight million, five hundred seventy-four thousand, five hundred sixty-six".