12651641504 has 24 divisors (see below), whose sum is σ = 24999847488. Its totient is φ = 6302473920.

The previous prime is 12651641447. The next prime is 12651641507. The reversal of 12651641504 is 40514615621.

It is not an unprimeable number, because it can be changed into a prime (12651641507) 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, 720782 + ... + 738125.

It is an arithmetic number, because the mean of its divisors is an integer number (1041660312).

Almost surely, 2^12651641504 is an apocalyptic number.

It is an amenable number.

12651641504 is a deficient number, since it is larger than the sum of its proper divisors (12348205984).

12651641504 is a wasteful number, since it uses less digits than its factorization.

12651641504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459188 (or 1459180 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 12651641504 in words is "twelve billion, six hundred fifty-one million, six hundred forty-one thousand, five hundred four".