12650641644 has 12 divisors (see below), whose sum is σ = 29518163864. Its totient is φ = 4216880544.

The previous prime is 12650641561. The next prime is 12650641651. The reversal of 12650641644 is 44614605621.

12650641644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527110057 + ... + 527110080.

Almost surely, 2^12650641644 is an apocalyptic number.

It is an amenable number.

12650641644 is an abundant number, since it is smaller than the sum of its proper divisors (16867522220).

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

12650641644 is a wasteful number, since it uses less digits than its factorization.

12650641644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054220144 (or 1054220142 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 12650641644 in words is "twelve billion, six hundred fifty million, six hundred forty-one thousand, six hundred forty-four".