12665777274 has 32 divisors (see below), whose sum is σ = 29801831040. Its totient is φ = 3973576896.

The previous prime is 12665777239. The next prime is 12665777297. The reversal of 12665777274 is 47277756621.

12665777274 is a `hidden beast` number, since 1 + 2 + 66 + 577 + 7 + 2 + 7 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 12665777274.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6897654 + ... + 6899489.

It is an arithmetic number, because the mean of its divisors is an integer number (931307220).

Almost surely, 2^12665777274 is an apocalyptic number.

12665777274 is an abundant number, since it is smaller than the sum of its proper divisors (17136053766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12665777274 is a wasteful number, since it uses less digits than its factorization.

12665777274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13797171 (or 13797165 counting only the distinct ones).

The product of its digits is 6914880, while the sum is 54.

The spelling of 12665777274 in words is "twelve billion, six hundred sixty-five million, seven hundred seventy-seven thousand, two hundred seventy-four".