12651066644 has 12 divisors (see below), whose sum is σ = 22853539968. Its totient is φ = 6121483800.

The previous prime is 12651066643. The next prime is 12651066653. The reversal of 12651066644 is 44666015621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651066643) 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, 51012242 + ... + 51012489.

It is an arithmetic number, because the mean of its divisors is an integer number (1904461664).

Almost surely, 2^12651066644 is an apocalyptic number.

It is an amenable number.

12651066644 is a deficient number, since it is larger than the sum of its proper divisors (10202473324).

12651066644 is a wasteful number, since it uses less digits than its factorization.

12651066644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102024766 (or 102024764 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 12651066644 in words is "twelve billion, six hundred fifty-one million, sixty-six thousand, six hundred forty-four".