12775252666 has 16 divisors (see below), whose sum is σ = 21625820640. Its totient is φ = 5606693680.

The previous prime is 12775252649. The next prime is 12775252717. The reversal of 12775252666 is 66625257721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10011316 + ... + 10012591.

It is an arithmetic number, because the mean of its divisors is an integer number (1351613790).

Almost surely, 2^12775252666 is an apocalyptic number.

12775252666 is a deficient number, since it is larger than the sum of its proper divisors (8850567974).

12775252666 is a wasteful number, since it uses less digits than its factorization.

12775252666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20023949.

The product of its digits is 2116800, while the sum is 49.

The spelling of 12775252666 in words is "twelve billion, seven hundred seventy-five million, two hundred fifty-two thousand, six hundred sixty-six".