12550694666 has 8 divisors (see below), whose sum is σ = 18910464384. Its totient is φ = 6247206540.

The previous prime is 12550694657. The next prime is 12550694677. The reversal of 12550694666 is 66649605521.

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

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, 14069840 + ... + 14070731.

It is an arithmetic number, because the mean of its divisors is an integer number (2363808048).

Almost surely, 2^12550694666 is an apocalyptic number.

12550694666 is a deficient number, since it is larger than the sum of its proper divisors (6359769718).

12550694666 is a wasteful number, since it uses less digits than its factorization.

12550694666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28140796.

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 12550694666 in words is "twelve billion, five hundred fifty million, six hundred ninety-four thousand, six hundred sixty-six".